<|im_start|>system
You are a helpful assistant that is capable of understanding and predicting customer shopping behaviors on Amazon. You first think about the reasoning process in the mind and then predict the customer actions and action argument. The reasoning process and the predicted action and action argument are enclosed within <think> </think> and <answer> </answer> tags, respectively, i.e., <think>reasoning process here</think><answer>predicted action and action argument here</answer>.
<|im_end|>
<|im_start|>user
You are given a customer behavior trajectory on Amazon. This trajectory include the customer long-term information (enclosed between <|memory_start|> and <|memory_end|>), previous actions the customer has taken with timestamps (enclosed between <|action_start|> and <|action_end|>), and current observations describing what the customer sees on Amazon (e.g., a search results page, a product detail page) (enclosed between <|observation_start|> and <|observation_end|>). 
Now your task is to predict the immediate next action and action argument (i.e., input_text, product_asin, or click_type) of this shopper by analyzing shopper shopping behaviors. The available action space and action argument space are provided between <|actionspace_start|> and <|actionspace_end|> to help guide your prediction. Please first analyze the customer's behavior patterns within the  <think> </think> section, then provide your prediction within the <answer> </answer> section, ensuring your prediction falls within the specified action and argument spaces. 

<|actionspace_start|>
Available actions are represented in JSON format. There are four primary action types with their corresponding action arguments:
1. input:
Action: Type text into an input field to search for a specific product. 
Action Argument: the input_text is the specific text entered by the customer.
{
"timestamp": "timestamp",
"action": "input",
"action_argument": "input_text",
}

2. click:
Action: Click on a UI interface button or clickable element on the Amazon website.
Action Argument: The clickable_name is one of the UI interface buttons or clickable elements including "review", "search", "product_option", "other", "nav_bar", "quantity", "page_related", "suggested_term", "cart_side_bar", "cart_page_select", and "filter". Select one of these buttons or clickable elements as action argument.
{
"timestamp": "timestamp",
"action": "click",
"action_argument": "clickable_name",
}

3. click_product:
Action: Click on product links or product images.
Action Argument: the Amazon Standard Identification Number (i.e., product_asin) of the clicked product.
{
"timestamp": "timestamp",
"action": "click_product",
"action_argument": "product_asin",
}

4. purchase:
Action: indicate intent to purchase by clicking on any purchase-related button. This includes clicking "Add to Cart", "Buy Now", "Set Subscription", or "Checkout" buttons for specific products. 
Action Argument: the Amazon Standard Identification Number (i.e., product_asin) of the product being purchased.
{
"timestamp": "timestamp",
"action": "purchase",
"action_argument": "product_asin",
}
<|actionspace_end|>

<|memory_start|>
{"timestamp": "2025-04-10T21:34:38.098Z", "action": "input", "action_argument": "vita"}
{"timestamp": "2025-04-10T21:34:38.228Z", "action": "click", "action_argument": "suggested_term"}
{"timestamp": "2025-04-10T21:36:07.486Z", "action": "click_product", "action_argument": "B08FNG91XM"}
{"timestamp": "2025-04-10T21:36:21.008Z", "action": "purchase", "action_argument": "B08FNG91XM"}
{"timestamp": "2025-04-10T21:36:25.628Z", "action": "click", "action_argument": "review"}
{"timestamp": "2025-04-10T21:36:41.227Z", "action": "click_product", "action_argument": "B08FNG91XM"}
{"timestamp": "2025-04-10T21:36:50.282Z", "action": "click_product", "action_argument": "B0000DJASY"}
{"timestamp": "2025-04-10T21:36:58.021Z", "action": "purchase", "action_argument": "B0000DJASY"}
{"timestamp": "2025-04-10T21:38:58.749Z", "action": "click", "action_argument": "nav_bar"}
{"timestamp": "2025-04-10T21:39:08.792Z", "action": "click", "action_argument": "quantity"}
{"timestamp": "2025-04-10T21:41:39.367Z", "action": "click", "action_argument": "quantity"}
<|memory_end|>

<|action_start|>
{"timestamp": "2025-04-18T23:28:27.888Z", "action": "click", "action_argument": "nav_bar"}
{"timestamp": "2025-04-18T23:29:04.531Z", "action": "click", "action_argument": "nav_bar"}
{"timestamp": "2025-04-18T23:29:19.463Z", "action": "click", "action_argument": "nav_bar"}
{"timestamp": "2025-04-18T23:31:03.986Z", "action": "click_product", "action_argument": "B07RWN8N9H"}
{"timestamp": "2025-04-18T23:31:25.177Z", "action": "click", "action_argument": "nav_bar"}
{"timestamp": "2025-04-18T23:31:26.214Z", "action": "click", "action_argument": "search"}
{"timestamp": "2025-04-18T23:33:14.977Z", "action": "click", "action_argument": "nav_bar"}
<|action_end|>

<|observation_start|>
Your context will be the JSON string containing page metadata of the Amazon page you are looking at. This Amazon page is the context you observed after performing your last action.
"search_term": [{"term": ""}],
"promotion_items": [{"title": "Designing Machine Learning Systems: An Iterative Process for Production-Ready Applications", "asin": "1098107969", "price": "$40.00", "quantity": ""},
{"title": "Ranong Tea Instant Thai Tea Mix 10 Sachets", "asin": "B06ZYCZWJH", "price": "$7.75", "quantity": ""},
{"title": "Hands-On Large Language Models: Language Understanding and Generation", "asin": "1098150961", "price": "$55.98", "quantity": ""},
{"title": "Amazon Basics Rectangular Plastic Desk Organizer, Accessory Tray, 9.4\" x 6.7\" x 2\", Black", "asin": "B07RZ1GWC3", "price": "$11.19", "quantity": ""},
{"title": "Sapiens: A Brief History of Humankind", "asin": "0062316117", "price": "$14.29", "quantity": ""},
{"title": "Nature\u2019s Bounty Zinc 50mg, Immune Support & Antioxidant Supplement, Promotes Skin Health 250 Caplets", "asin": "B08YLTCDTN", "price": "$8.68", "quantity": ""},
{"title": "Allen Carr's Quit Drinking Without Willpower: Be a happy nondrinker (Allen Carr's Easyway, 2)", "asin": "1784045411", "price": "$10.13", "quantity": ""},
{"title": "The Hundred-Page Language Models Book: hands-on with PyTorch (The Hundred-Page Books)", "asin": "1778042724", "price": "$46.95", "quantity": ""},
{"title": "Nature's Bounty Fish Oil, Supports Heart Health, 1200 Mg, 360 Mg Omega-3, Rapid Release Softgels, 200 Ct", "asin": "B000NPYY04", "price": "$13.59", "quantity": ""},
{"title": "Futurebiotics Ashwagandha Extra Strength Stress & Mood Support with BioPerine - Non GMO Formula, 100 Vegetarian Capsules", "asin": "B0CQMHSPDV", "price": "$9.97", "quantity": ""},
{"title": "Nature's Bounty Zinc, Supports Immune System Function, Dietary Supplement, 50 mg, Caplets, 100 Ct", "asin": "B000GCQ8X0", "price": "$3.47", "quantity": ""},
{"title": "Amazon Basics Stapler with 1000 Staples, Office Stapler, 25 Sheet Capacity, Non-Slip, Black", "asin": "B079ZV4V3C", "price": "$9.48", "quantity": ""},
{"title": "WuFuYuan Boba Tapioca Pearls, Black Sugar Flavor, Ready to Cook in 5 Minutes or Microwave in 3 Minutes, 8.8 oz. (Pack of 2)", "asin": "B007AX3ABG", "price": "$8.49", "quantity": ""},
{"title": "Black Pen Holder Cup for Desk, Black Wire Mesh Pencil Cup Holder for Desk Office Pen Organizer", "asin": "B089119T67", "price": "$5.99", "quantity": ""}],
"active_items": [{"title": "AI Engineering: Building Applications with Foundation Models", "asin": "1098166302", "delivery": "Same-Day FREE delivery Today 5\u202fPM - 10\u202fPM FREE Returns", "quantity": "1", "selected": false, "options": []},
{"title": "Ranong Tea Matcha Green Tea Latte Instant Drink Mix 8 Sachets", "asin": "B07RWN8N9H", "delivery": "FREE delivery Mon, Apr 21", "quantity": "1", "selected": false, "options": [{"Size": "8 Count (Pack of 1)"}]},
{"title": "LLM Engineer's Handbook: Master the art of engineering large language models from concept to production", "asin": "1836200072", "delivery": "Two-Day FREE delivery Sun, Apr 20 FREE Returns", "quantity": "1", "selected": false, "options": []},
{"title": "Build a Large Language Model (From Scratch)", "asin": "1633437167", "delivery": "One-Day FREE delivery Tomorrow, Apr 19 FREE Returns", "quantity": "1", "selected": false, "options": []},
{"title": "Nexus: A Brief History of Information Networks from the Stone Age to AI", "asin": "059373422X", "delivery": "Two-Day FREE delivery Sun, Apr 20 FREE Returns", "quantity": "1", "selected": false, "options": []},
{"title": "Butter: A Novel of Food and Murder", "asin": "0063236419", "delivery": "One-Day FREE delivery Tomorrow, Apr 19 FREE Returns", "quantity": "1", "selected": false, "options": []},
{"title": "Amazon Basics Rectangular Plastic Desk Organizer, Half Accessory Tray, 9.4\" x 3.3\" x 1\", Black", "asin": "B07S268HGD", "delivery": "One-Day FREE delivery Tomorrow, Apr 19 FREE Returns", "quantity": "1", "selected": false, "options": []},
{"title": "Nature\u2019s Bounty Magnesium, Bone and Muscle Health, Whole Body Support, Tablets, 500 Mg, 200 Ct", "asin": "B00H5PJ0HW", "delivery": "Same-Day FREE delivery Today 5\u202fPM - 10\u202fPM on $25 of qualifying items", "quantity": "1", "selected": false, "options": [{"Flavor Name": "Unflavored"}, {"Size": "200 Count (Pack of 1)"}]},
{"title": "The Global War on Tobacco: Mapping the World's First Public Health Treaty", "asin": "1421416832", "delivery": "$3.99 delivery Apr 28 - May 5", "quantity": "1", "selected": false, "options": []},
{"title": "Allen Carr's Easy Way To Stop Smoking", "asin": "0615482155", "delivery": "One-Day FREE delivery Tomorrow, Apr 19 FREE Returns", "quantity": "1", "selected": false, "options": []},
{"title": "Go! More Than a Game: Revised Edition", "asin": "080483475X", "delivery": "One-Day FREE delivery Tomorrow, Apr 19 FREE Returns", "quantity": "1", "selected": false, "options": []},
{"title": "Killers of the Flower Moon: Adapted for Young Readers: The Osage Murders and the Birth of the FBI", "asin": "0593377370", "delivery": "FREE delivery Mon, Apr 21 FREE Returns", "quantity": "1", "selected": false, "options": []},
{"title": "For Profit: A History of Corporations", "asin": "1541601572", "delivery": "One-Day FREE delivery Tomorrow, Apr 19 FREE Returns", "quantity": "1", "selected": false, "options": []}],
"saved_items": [{"title": "USHAKE Bike Combination U Lock, Heavy Duty Bike Combination U Lock Paddle Lock for Bicycle Electric Scooter Motorcycles Metal Fence Gate Anti Theft", "asin": "B074Z1PVZQ", "options": []},
{"asin": "B074Z1PVZQ", "options": []},
{"title": "NOCCO Zero Sugar Energy Drink, Variety Pack - 12 Fl Oz (12-Pack) - 180 mg Caffeine, Sugar-Free, BCAAs - Branched Chain Amino Acids, Carbonated, Low Calorie, B Vitamins, Grab & Go Performance Beverage", "asin": "B07Y1VYP75", "options": []},
{"title": "Asvel 7509 Rice Container Bin with Pour Spout Plastic Clear 2KG", "asin": "B00GQIM9KO", "options": [{"Pattern Name": "1pcs"}]},
{"title": "1 X Chinese Calligraphy Black Ink (yi de ge mo Zhi) 100G", "asin": "B0042IRDAQ", "options": []},
{"title": "Core Power Elite High Protein Shake, Chocolate, 42g Bottle, 14oz, 12 Pack", "asin": "B01DDIRDZA", "options": [{"Flavor Name": "Chocolate"}, {"Size": "14 Fl Oz (Pack of 12)"}]},
{"title": "Living proof Dry Shampoo, Perfect hair Day, Dry Shampoo for Women and Men, 5.5 oz", "asin": "B0170GOCVO", "options": [{"Size": "5.5 Ounce (Pack of 1)"}]},
{"title": "CLIF BAR - Crunchy Peanut Butter - Made with Organic Oats - 11g Protein - Non-GMO - Plant Based - Energy Bars - 2.4 oz. (18 Pack)", "asin": "B07CVDTFZ2", "options": []},
{"title": "Midea MERM17S1AST 1.7 Cu.ft Mini Fridge Compact Refrigerator, Cubic Feet, Silver", "asin": "B0CWV73784", "options": []},
{"title": "XTEND Sport BCAA Powder Blue Raspberry Ice - Electrolyte Powder for Recovery & Hydration with Amino Acids - 30 Servings", "asin": "B07BV6Y72J", "options": [{"Flavor Name": "Blue Raspberry Ice"}, {"Size": "30 Servings (Pack of 1)"}]},
{"title": "EUHOMY Upright freezer, 3.0 Cubic Feet, Single Door Compact Mini Freezer with Reversible Stainless Steel Door, Small freezer for Home/Dorms/Apartment/Office, Silver", "asin": "B082PHYNMY", "options": []}]
<|observation_end|>

# Output Format
Please provide your final answer in JSON format within <answer></answer> tags using the following schema (Note that the thinking process should be within 250 words and give enough output space for final answer):
"<answer>
{
"timestamp": "2025-04-18T23:33:25.888Z", // the timestamp when this action occurs.
"action": "string", // select one plausible action from: input, click_product, purchase, or click.
"acion_argument": "string", // select appropriate value based on action type: input_text, product_asin, clickable_name.
}
</answer>"

<|im_end|>
<|im_start|>assistant
<think>

user
<|im_start|>system
You are a helpful assistant that is capable of understanding and predicting customer shopping behaviors on Amazon. You first think about the reasoning process in the mind and then predict the customer actions and action argument. The reasoning process and the predicted action and action argument are enclosed within <think> </think> and <answer> </answer> tags, respectively, i.e., <think>reasoning process here</think><answer>predicted action and action argument here</answer>.
<|im_end|>
<|im_start|>user
You are given a customer behavior trajectory on Amazon. This trajectory include the customer long-term information (enclosed between <|memory_start|> and <|memory_end|>), previous actions the customer has taken with timestamps (enclosed between <|action_start|> and <|action_end|>), and current observations describing what the customer sees on Amazon (e.g., a search results page, a product detail page) (enclosed between <|observation_start|> and <|observation_end|>). 
Now your task is to predict the immediate next action and action argument (i.e., input_text, product_asin, or click_type) of this shopper by analyzing shopper shopping behaviors. The available action space and action argument space are provided between <|actionspace_start|> and <|actionspace_end|> to help guide your prediction. Please first analyze the customer's behavior patterns within the  <think> </think> section, then provide your prediction within the <answer> </answer> section, ensuring your prediction falls within the specified action and argument spaces. 

<|actionspace_start|>
Available actions are represented in JSON format. There are four primary action types with their corresponding action arguments:
1. input:
Action: Type text into an input field to search for a specific product. 
Action Argument: the input_text is the specific text entered by the customer.
{
"timestamp": "timestamp",
"action": "input",
"action_argument": "input_text",
}

2. click:
Action: Click on a UI interface button or clickable element on the Amazon website.
Action Argument: The clickable_name is one of the UI interface buttons or clickable elements including "review", "search", "product_option", "other", "nav_bar", "quantity", "page_related", "suggested_term", "cart_side_bar", "cart_page_select", and "filter". Select one of these buttons or clickable elements as action argument.
{
"timestamp": "timestamp",
"action": "click",
"action_argument": "clickable_name",
}

3. click_product:
Action: Click on product links or product images.
Action Argument: the Amazon Standard Identification Number (i.e., product_asin) of the clicked product.
{
"timestamp": "timestamp",
"action": "click_product",
"action_argument": "product_asin",
}

4. purchase:
Action: indicate intent to purchase by clicking on any purchase-related button. This includes clicking "Add to Cart", "Buy Now", "Set Subscription", or "Checkout" buttons for specific products. 
Action Argument: the Amazon Standard Identification Number (i.e., product_asin) of the product being purchased.
{
"timestamp": "timestamp",
"action": "purchase",
"action_argument": "product_asin",
}
<|actionspace_end|>

<|memory_start|>
{"timestamp": "2025-04-10T21:34:38.098Z", "action": "input", "action_argument": "vita"}
{"timestamp": "2025-04-10T21:34:38.228Z", "action": "click", "action_argument": "suggested_term"}
{"timestamp": "2025-04-10T21:36:07.486Z", "action": "click_product", "action_argument": "B08FNG91XM"}
{"timestamp": "2025-04-10T21:36:21.008Z", "action": "purchase", "action_argument": "B08FNG91XM"}
{"timestamp": "2025-04-10T21:36:25.628Z", "action": "click", "action_argument": "review"}
{"timestamp": "2025-04-10T21:36:41.227Z", "action": "click_product", "action_argument": "B08FNG91XM"}
{"timestamp": "2025-04-10T21:36:50.282Z", "action": "click_product", "action_argument": "B0000DJASY"}
{"timestamp": "2025-04-10T21:36:58.021Z", "action": "purchase", "action_argument": "B0000DJASY"}
{"timestamp": "2025-04-10T21:38:58.749Z", "action": "click", "action_argument": "nav_bar"}
{"timestamp": "2025-04-10T21:39:08.792Z", "action": "click", "action_argument": "quantity"}
{"timestamp": "2025-04-10T21:41:39.367Z", "action": "click", "action_argument": "quantity"}
<|memory_end|>

<|action_start|>
{"timestamp": "2025-04-18T23:28:27.888Z", "action": "click", "action_argument": "nav_bar"}
{"timestamp": "2025-04-18T23:29:04.531Z", "action": "click", "action_argument": "nav_bar"}
{"timestamp": "2025-04-18T23:29:19.463Z", "action": "click", "action_argument": "nav_bar"}
{"timestamp": "2025-04-18T23:31:03.986Z", "action": "click_product", "action_argument": "B07RWN8N9H"}
{"timestamp": "2025-04-18T23:31:25.177Z", "action": "click", "action_argument": "nav_bar"}
{"timestamp": "2025-04-18T23:31:26.214Z", "action": "click", "action_argument": "search"}
{"timestamp": "2025-04-18T23:33:14.977Z", "action": "click", "action_argument": "nav_bar"}
<|action_end|>

<|observation_start|>
Your context will be the JSON string containing page metadata of the Amazon page you are looking at. This Amazon page is the context you observed after performing your last action.
"search_term": [{"term": ""}],
"promotion_items": [{"title": "Designing Machine Learning Systems: An Iterative Process for Production-Ready Applications", "asin": "1098107969", "price": "$40.00", "quantity": ""},
{"title": "Ranong Tea Instant Thai Tea Mix 10 Sachets", "asin": "B06ZYCZWJH", "price": "$7.75", "quantity": ""},
{"title": "Hands-On Large Language Models: Language Understanding and Generation", "asin": "1098150961", "price": "$55.98", "quantity": ""},
{"title": "Amazon Basics Rectangular Plastic Desk Organizer, Accessory Tray, 9.4\" x 6.7\" x 2\", Black", "asin": "B07RZ1GWC3", "price": "$11.19", "quantity": ""},
{"title": "Sapiens: A Brief History of Humankind", "asin": "0062316117", "price": "$14.29", "quantity": ""},
{"title": "Nature\u2019s Bounty Zinc 50mg, Immune Support & Antioxidant Supplement, Promotes Skin Health 250 Caplets", "asin": "B08YLTCDTN", "price": "$8.68", "quantity": ""},
{"title": "Allen Carr's Quit Drinking Without Willpower: Be a happy nondrinker (Allen Carr's Easyway, 2)", "asin": "1784045411", "price": "$10.13", "quantity": ""},
{"title": "The Hundred-Page Language Models Book: hands-on with PyTorch (The Hundred-Page Books)", "asin": "1778042724", "price": "$46.95", "quantity": ""},
{"title": "Nature's Bounty Fish Oil, Supports Heart Health, 1200 Mg, 360 Mg Omega-3, Rapid Release Softgels, 200 Ct", "asin": "B000NPYY04", "price": "$13.59", "quantity": ""},
{"title": "Futurebiotics Ashwagandha Extra Strength Stress & Mood Support with BioPerine - Non GMO Formula, 100 Vegetarian Capsules", "asin": "B0CQMHSPDV", "price": "$9.97", "quantity": ""},
{"title": "Nature's Bounty Zinc, Supports Immune System Function, Dietary Supplement, 50 mg, Caplets, 100 Ct", "asin": "B000GCQ8X0", "price": "$3.47", "quantity": ""},
{"title": "Amazon Basics Stapler with 1000 Staples, Office Stapler, 25 Sheet Capacity, Non-Slip, Black", "asin": "B079ZV4V3C", "price": "$9.48", "quantity": ""},
{"title": "WuFuYuan Boba Tapioca Pearls, Black Sugar Flavor, Ready to Cook in 5 Minutes or Microwave in 3 Minutes, 8.8 oz. (Pack of 2)", "asin": "B007AX3ABG", "price": "$8.49", "quantity": ""},
{"title": "Black Pen Holder Cup for Desk, Black Wire Mesh Pencil Cup Holder for Desk Office Pen Organizer", "asin": "B089119T67", "price": "$5.99", "quantity": ""}],
"active_items": [{"title": "AI Engineering: Building Applications with Foundation Models", "asin": "1098166302", "delivery": "Same-Day FREE delivery Today 5\u202fPM - 10\u202fPM FREE Returns", "quantity": "1", "selected": false, "options": []},
{"title": "Ranong Tea Matcha Green Tea Latte Instant Drink Mix 8 Sachets", "asin": "B07RWN8N9H", "delivery": "FREE delivery Mon, Apr 21", "quantity": "1", "selected": false, "options": [{"Size": "8 Count (Pack of 1)"}]},
{"title": "LLM Engineer's Handbook: Master the art of engineering large language models from concept to production", "asin": "1836200072", "delivery": "Two-Day FREE delivery Sun, Apr 20 FREE Returns", "quantity": "1", "selected": false, "options": []},
{"title": "Build a Large Language Model (From Scratch)", "asin": "1633437167", "delivery": "One-Day FREE delivery Tomorrow, Apr 19 FREE Returns", "quantity": "1", "selected": false, "options": []},
{"title": "Nexus: A Brief History of Information Networks from the Stone Age to AI", "asin": "059373422X", "delivery": "Two-Day FREE delivery Sun, Apr 20 FREE Returns", "quantity": "1", "selected": false, "options": []},
{"title": "Butter: A Novel of Food and Murder", "asin": "0063236419", "delivery": "One-Day FREE delivery Tomorrow, Apr 19 FREE Returns", "quantity": "1", "selected": false, "options": []},
{"title": "Amazon Basics Rectangular Plastic Desk Organizer, Half Accessory Tray, 9.4\" x 3.3\" x 1\", Black", "asin": "B07S268HGD", "delivery": "One-Day FREE delivery Tomorrow, Apr 19 FREE Returns", "quantity": "1", "selected": false, "options": []},
{"title": "Nature\u2019s Bounty Magnesium, Bone and Muscle Health, Whole Body Support, Tablets, 500 Mg, 200 Ct", "asin": "B00H5PJ0HW", "delivery": "Same-Day FREE delivery Today 5\u202fPM - 10\u202fPM on $25 of qualifying items", "quantity": "1", "selected": false, "options": [{"Flavor Name": "Unflavored"}, {"Size": "200 Count (Pack of 1)"}]},
{"title": "The Global War on Tobacco: Mapping the World's First Public Health Treaty", "asin": "1421416832", "delivery": "$3.99 delivery Apr 28 - May 5", "quantity": "1", "selected": false, "options": []},
{"title": "Allen Carr's Easy Way To Stop Smoking", "asin": "0615482155", "delivery": "One-Day FREE delivery Tomorrow, Apr 19 FREE Returns", "quantity": "1", "selected": false, "options": []},
{"title": "Go! More Than a Game: Revised Edition", "asin": "080483475X", "delivery": "One-Day FREE delivery Tomorrow, Apr 19 FREE Returns", "quantity": "1", "selected": false, "options": []},
{"title": "Killers of the Flower Moon: Adapted for Young Readers: The Osage Murders and the Birth of the FBI", "asin": "0593377370", "delivery": "FREE delivery Mon, Apr 21 FREE Returns", "quantity": "1", "selected": false, "options": []},
{"title": "For Profit: A History of Corporations", "asin": "1541601572", "delivery": "One-Day FREE delivery Tomorrow, Apr 19 FREE Returns", "quantity": "1", "selected": false, "options": []}],
"saved_items": [{"title": "USHAKE Bike Combination U Lock, Heavy Duty Bike Combination U Lock Paddle Lock for Bicycle Electric Scooter Motorcycles Metal Fence Gate Anti Theft", "asin": "B074Z1PVZQ", "options": []},
{"asin": "B074Z1PVZQ", "options": []},
{"title": "NOCCO Zero Sugar Energy Drink, Variety Pack - 12 Fl Oz (12-Pack) - 180 mg Caffeine, Sugar-Free, BCAAs - Branched Chain Amino Acids, Carbonated, Low Calorie, B Vitamins, Grab & Go Performance Beverage", "asin": "B07Y1VYP75", "options": []},
{"title": "Asvel 7509 Rice Container Bin with Pour Spout Plastic Clear 2KG", "asin": "B00GQIM9KO", "options": [{"Pattern Name": "1pcs"}]},
{"title": "1 X Chinese Calligraphy Black Ink (yi de ge mo Zhi) 100G", "asin": "B0042IRDAQ", "options": []},
{"title": "Core Power Elite High Protein Shake, Chocolate, 42g Bottle, 14oz, 12 Pack", "asin": "B01DDIRDZA", "options": [{"Flavor Name": "Chocolate"}, {"Size": "14 Fl Oz (Pack of 12)"}]},
{"title": "Living proof Dry Shampoo, Perfect hair Day, Dry Shampoo for Women and Men, 5.5 oz", "asin": "B0170GOCVO", "options": [{"Size": "5.5 Ounce (Pack of 1)"}]},
{"title": "CLIF BAR - Crunchy Peanut Butter - Made with Organic Oats - 11g Protein - Non-GMO - Plant Based - Energy Bars - 2.4 oz. (18 Pack)", "asin": "B07CVDTFZ2", "options": []},
{"title": "Midea MERM17S1AST 1.7 Cu.ft Mini Fridge Compact Refrigerator, Cubic Feet, Silver", "asin": "B0CWV73784", "options": []},
{"title": "XTEND Sport BCAA Powder Blue Raspberry Ice - Electrolyte Powder for Recovery & Hydration with Amino Acids - 30 Servings", "asin": "B07BV6Y72J", "options": [{"Flavor Name": "Blue Raspberry Ice"}, {"Size": "30 Servings (Pack of 1)"}]},
{"title": "EUHOMY Upright freezer, 3.0 Cubic Feet, Single Door Compact Mini Freezer with Reversible Stainless Steel Door, Small freezer for Home/Dorms/Apartment/Office, Silver", "asin": "B082PHYNMY", "options": []}]
<|observation_end|>

# Output Format
Please provide your final answer in JSON format within <answer></answer> tags using the following schema (Note that the thinking process should be within 250 words and give enough output space for final answer):
"<answer>
{
"timestamp": "2025-04-18T23:33:25.888Z", // the timestamp when this action occurs.
"action": "string", // select one plausible action from: input, click_product, purchase, or click.
"acion_argument": "string", // select appropriate value based on action type: input_text, product_asin, clickable_name.
}
</answer>"

<|im_end|>
<|im_start|>assistant
<think>

<answer>{"timestamp": "2025-04-18T23:33:25.888Z","action": "click_product","acion_argument": "059373422X",}</answer>
rule
<answer>{"timestamp": "2025-04-18T23:33:25.888Z","action": "click_product","acion_argument": "059373422X",}</answer>
<|im_start|>system
You are a helpful assistant that is capable of understanding and predicting customer shopping behaviors on Amazon. You first think about the reasoning process in the mind and then predict the customer actions and action argument. The reasoning process and the predicted action and action argument are enclosed within <think> </think> and <answer> </answer> tags, respectively, i.e., <think>reasoning process here</think><answer>predicted action and action argument here</answer>.
<|im_end|>
<|im_start|>user
You are given a customer behavior trajectory on Amazon. This trajectory include the customer long-term information (enclosed between <|memory_start|> and <|memory_end|>), previous actions the customer has taken with timestamps (enclosed between <|action_start|> and <|action_end|>), and current observations describing what the customer sees on Amazon (e.g., a search results page, a product detail page) (enclosed between <|observation_start|> and <|observation_end|>). 
Now your task is to predict the immediate next action and action argument (i.e., input_text, product_asin, or click_type) of this shopper by analyzing shopper shopping behaviors. The available action space and action argument space are provided between <|actionspace_start|> and <|actionspace_end|> to help guide your prediction. Please first analyze the customer's behavior patterns within the  <think> </think> section, then provide your prediction within the <answer> </answer> section, ensuring your prediction falls within the specified action and argument spaces. 

<|actionspace_start|>
Available actions are represented in JSON format. There are four primary action types with their corresponding action arguments:
1. input:
Action: Type text into an input field to search for a specific product. 
Action Argument: the input_text is the specific text entered by the customer.
{
"timestamp": "timestamp",
"action": "input",
"action_argument": "input_text",
}

2. click:
Action: Click on a UI interface button or clickable element on the Amazon website.
Action Argument: The clickable_name is one of the UI interface buttons or clickable elements including "review", "search", "product_option", "other", "nav_bar", "quantity", "page_related", "suggested_term", "cart_side_bar", "cart_page_select", and "filter". Select one of these buttons or clickable elements as action argument.
{
"timestamp": "timestamp",
"action": "click",
"action_argument": "clickable_name",
}

3. click_product:
Action: Click on product links or product images.
Action Argument: the Amazon Standard Identification Number (i.e., product_asin) of the clicked product.
{
"timestamp": "timestamp",
"action": "click_product",
"action_argument": "product_asin",
}

4. purchase:
Action: indicate intent to purchase by clicking on any purchase-related button. This includes clicking "Add to Cart", "Buy Now", "Set Subscription", or "Checkout" buttons for specific products. 
Action Argument: the Amazon Standard Identification Number (i.e., product_asin) of the product being purchased.
{
"timestamp": "timestamp",
"action": "purchase",
"action_argument": "product_asin",
}
<|actionspace_end|>

<|memory_start|>
{"timestamp": "2025-04-10T21:34:38.098Z", "action": "input", "action_argument": "vita"}
{"timestamp": "2025-04-10T21:34:38.228Z", "action": "click", "action_argument": "suggested_term"}
{"timestamp": "2025-04-10T21:36:07.486Z", "action": "click_product", "action_argument": "B08FNG91XM"}
{"timestamp": "2025-04-10T21:36:21.008Z", "action": "purchase", "action_argument": "B08FNG91XM"}
{"timestamp": "2025-04-10T21:36:25.628Z", "action": "click", "action_argument": "review"}
{"timestamp": "2025-04-10T21:36:41.227Z", "action": "click_product", "action_argument": "B08FNG91XM"}
{"timestamp": "2025-04-10T21:36:50.282Z", "action": "click_product", "action_argument": "B0000DJASY"}
{"timestamp": "2025-04-10T21:36:58.021Z", "action": "purchase", "action_argument": "B0000DJASY"}
{"timestamp": "2025-04-10T21:38:58.749Z", "action": "click", "action_argument": "nav_bar"}
{"timestamp": "2025-04-10T21:39:08.792Z", "action": "click", "action_argument": "quantity"}
{"timestamp": "2025-04-10T21:41:39.367Z", "action": "click", "action_argument": "quantity"}
<|memory_end|>

<|action_start|>
{"timestamp": "2025-04-18T23:28:27.888Z", "action": "click", "action_argument": "nav_bar"}
{"timestamp": "2025-04-18T23:29:04.531Z", "action": "click", "action_argument": "nav_bar"}
{"timestamp": "2025-04-18T23:29:19.463Z", "action": "click", "action_argument": "nav_bar"}
{"timestamp": "2025-04-18T23:31:03.986Z", "action": "click_product", "action_argument": "B07RWN8N9H"}
{"timestamp": "2025-04-18T23:31:25.177Z", "action": "click", "action_argument": "nav_bar"}
{"timestamp": "2025-04-18T23:31:26.214Z", "action": "click", "action_argument": "search"}
{"timestamp": "2025-04-18T23:33:14.977Z", "action": "click", "action_argument": "nav_bar"}
<|action_end|>

<|observation_start|>
Your context will be the JSON string containing page metadata of the Amazon page you are looking at. This Amazon page is the context you observed after performing your last action.
"search_term": [{"term": ""}],
"promotion_items": [{"title": "Designing Machine Learning Systems: An Iterative Process for Production-Ready Applications", "asin": "1098107969", "price": "$40.00", "quantity": ""},
{"title": "Ranong Tea Instant Thai Tea Mix 10 Sachets", "asin": "B06ZYCZWJH", "price": "$7.75", "quantity": ""},
{"title": "Hands-On Large Language Models: Language Understanding and Generation", "asin": "1098150961", "price": "$55.98", "quantity": ""},
{"title": "Amazon Basics Rectangular Plastic Desk Organizer, Accessory Tray, 9.4\" x 6.7\" x 2\", Black", "asin": "B07RZ1GWC3", "price": "$11.19", "quantity": ""},
{"title": "Sapiens: A Brief History of Humankind", "asin": "0062316117", "price": "$14.29", "quantity": ""},
{"title": "Nature\u2019s Bounty Zinc 50mg, Immune Support & Antioxidant Supplement, Promotes Skin Health 250 Caplets", "asin": "B08YLTCDTN", "price": "$8.68", "quantity": ""},
{"title": "Allen Carr's Quit Drinking Without Willpower: Be a happy nondrinker (Allen Carr's Easyway, 2)", "asin": "1784045411", "price": "$10.13", "quantity": ""},
{"title": "The Hundred-Page Language Models Book: hands-on with PyTorch (The Hundred-Page Books)", "asin": "1778042724", "price": "$46.95", "quantity": ""},
{"title": "Nature's Bounty Fish Oil, Supports Heart Health, 1200 Mg, 360 Mg Omega-3, Rapid Release Softgels, 200 Ct", "asin": "B000NPYY04", "price": "$13.59", "quantity": ""},
{"title": "Futurebiotics Ashwagandha Extra Strength Stress & Mood Support with BioPerine - Non GMO Formula, 100 Vegetarian Capsules", "asin": "B0CQMHSPDV", "price": "$9.97", "quantity": ""},
{"title": "Nature's Bounty Zinc, Supports Immune System Function, Dietary Supplement, 50 mg, Caplets, 100 Ct", "asin": "B000GCQ8X0", "price": "$3.47", "quantity": ""},
{"title": "Amazon Basics Stapler with 1000 Staples, Office Stapler, 25 Sheet Capacity, Non-Slip, Black", "asin": "B079ZV4V3C", "price": "$9.48", "quantity": ""},
{"title": "WuFuYuan Boba Tapioca Pearls, Black Sugar Flavor, Ready to Cook in 5 Minutes or Microwave in 3 Minutes, 8.8 oz. (Pack of 2)", "asin": "B007AX3ABG", "price": "$8.49", "quantity": ""},
{"title": "Black Pen Holder Cup for Desk, Black Wire Mesh Pencil Cup Holder for Desk Office Pen Organizer", "asin": "B089119T67", "price": "$5.99", "quantity": ""}],
"active_items": [{"title": "AI Engineering: Building Applications with Foundation Models", "asin": "1098166302", "delivery": "Same-Day FREE delivery Today 5\u202fPM - 10\u202fPM FREE Returns", "quantity": "1", "selected": false, "options": []},
{"title": "Ranong Tea Matcha Green Tea Latte Instant Drink Mix 8 Sachets", "asin": "B07RWN8N9H", "delivery": "FREE delivery Mon, Apr 21", "quantity": "1", "selected": false, "options": [{"Size": "8 Count (Pack of 1)"}]},
{"title": "LLM Engineer's Handbook: Master the art of engineering large language models from concept to production", "asin": "1836200072", "delivery": "Two-Day FREE delivery Sun, Apr 20 FREE Returns", "quantity": "1", "selected": false, "options": []},
{"title": "Build a Large Language Model (From Scratch)", "asin": "1633437167", "delivery": "One-Day FREE delivery Tomorrow, Apr 19 FREE Returns", "quantity": "1", "selected": false, "options": []},
{"title": "Nexus: A Brief History of Information Networks from the Stone Age to AI", "asin": "059373422X", "delivery": "Two-Day FREE delivery Sun, Apr 20 FREE Returns", "quantity": "1", "selected": false, "options": []},
{"title": "Butter: A Novel of Food and Murder", "asin": "0063236419", "delivery": "One-Day FREE delivery Tomorrow, Apr 19 FREE Returns", "quantity": "1", "selected": false, "options": []},
{"title": "Amazon Basics Rectangular Plastic Desk Organizer, Half Accessory Tray, 9.4\" x 3.3\" x 1\", Black", "asin": "B07S268HGD", "delivery": "One-Day FREE delivery Tomorrow, Apr 19 FREE Returns", "quantity": "1", "selected": false, "options": []},
{"title": "Nature\u2019s Bounty Magnesium, Bone and Muscle Health, Whole Body Support, Tablets, 500 Mg, 200 Ct", "asin": "B00H5PJ0HW", "delivery": "Same-Day FREE delivery Today 5\u202fPM - 10\u202fPM on $25 of qualifying items", "quantity": "1", "selected": false, "options": [{"Flavor Name": "Unflavored"}, {"Size": "200 Count (Pack of 1)"}]},
{"title": "The Global War on Tobacco: Mapping the World's First Public Health Treaty", "asin": "1421416832", "delivery": "$3.99 delivery Apr 28 - May 5", "quantity": "1", "selected": false, "options": []},
{"title": "Allen Carr's Easy Way To Stop Smoking", "asin": "0615482155", "delivery": "One-Day FREE delivery Tomorrow, Apr 19 FREE Returns", "quantity": "1", "selected": false, "options": []},
{"title": "Go! More Than a Game: Revised Edition", "asin": "080483475X", "delivery": "One-Day FREE delivery Tomorrow, Apr 19 FREE Returns", "quantity": "1", "selected": false, "options": []},
{"title": "Killers of the Flower Moon: Adapted for Young Readers: The Osage Murders and the Birth of the FBI", "asin": "0593377370", "delivery": "FREE delivery Mon, Apr 21 FREE Returns", "quantity": "1", "selected": false, "options": []},
{"title": "For Profit: A History of Corporations", "asin": "1541601572", "delivery": "One-Day FREE delivery Tomorrow, Apr 19 FREE Returns", "quantity": "1", "selected": false, "options": []}],
"saved_items": [{"title": "USHAKE Bike Combination U Lock, Heavy Duty Bike Combination U Lock Paddle Lock for Bicycle Electric Scooter Motorcycles Metal Fence Gate Anti Theft", "asin": "B074Z1PVZQ", "options": []},
{"asin": "B074Z1PVZQ", "options": []},
{"title": "NOCCO Zero Sugar Energy Drink, Variety Pack - 12 Fl Oz (12-Pack) - 180 mg Caffeine, Sugar-Free, BCAAs - Branched Chain Amino Acids, Carbonated, Low Calorie, B Vitamins, Grab & Go Performance Beverage", "asin": "B07Y1VYP75", "options": []},
{"title": "Asvel 7509 Rice Container Bin with Pour Spout Plastic Clear 2KG", "asin": "B00GQIM9KO", "options": [{"Pattern Name": "1pcs"}]},
{"title": "1 X Chinese Calligraphy Black Ink (yi de ge mo Zhi) 100G", "asin": "B0042IRDAQ", "options": []},
{"title": "Core Power Elite High Protein Shake, Chocolate, 42g Bottle, 14oz, 12 Pack", "asin": "B01DDIRDZA", "options": [{"Flavor Name": "Chocolate"}, {"Size": "14 Fl Oz (Pack of 12)"}]},
{"title": "Living proof Dry Shampoo, Perfect hair Day, Dry Shampoo for Women and Men, 5.5 oz", "asin": "B0170GOCVO", "options": [{"Size": "5.5 Ounce (Pack of 1)"}]},
{"title": "CLIF BAR - Crunchy Peanut Butter - Made with Organic Oats - 11g Protein - Non-GMO - Plant Based - Energy Bars - 2.4 oz. (18 Pack)", "asin": "B07CVDTFZ2", "options": []},
{"title": "Midea MERM17S1AST 1.7 Cu.ft Mini Fridge Compact Refrigerator, Cubic Feet, Silver", "asin": "B0CWV73784", "options": []},
{"title": "XTEND Sport BCAA Powder Blue Raspberry Ice - Electrolyte Powder for Recovery & Hydration with Amino Acids - 30 Servings", "asin": "B07BV6Y72J", "options": [{"Flavor Name": "Blue Raspberry Ice"}, {"Size": "30 Servings (Pack of 1)"}]},
{"title": "EUHOMY Upright freezer, 3.0 Cubic Feet, Single Door Compact Mini Freezer with Reversible Stainless Steel Door, Small freezer for Home/Dorms/Apartment/Office, Silver", "asin": "B082PHYNMY", "options": []}]
<|observation_end|>

# Output Format
Please provide your final answer in JSON format within <answer></answer> tags using the following schema (Note that the thinking process should be within 250 words and give enough output space for final answer):
"<answer>
{
"timestamp": "2025-04-18T23:33:25.888Z", // the timestamp when this action occurs.
"action": "string", // select one plausible action from: input, click_product, purchase, or click.
"acion_argument": "string", // select appropriate value based on action type: input_text, product_asin, clickable_name.
}
</answer>"

<|im_end|>
<|im_start|>assistant
<think>

test