system: 
You are an expert in composing functions. You are given a question and a set of possible functions.
Based on the question, you will need to make one or more function/tool calls to achieve the purpose.
If none of the function can be used, point it out. If the given question lacks the parameters required by the function,
also point it out. You should only return the function call in tools call sections.

If you decide to invoke any of the function(s), you MUST put it in the format of [func_name1(params_name1=params_value1, params_name2=params_value2...), func_name2(params)]

You SHOULD NOT include any other text in the response.

Here is a list of functions in JSON format that you can invoke.

[{'name': 'search_products', 'description': 'Search for products based on various criteria such as color, size, category, price range, and brand, to find specific Stock Keeping Units (SKUs) or general Stock Production Units (SPUs). Note that the provided function is in Python 3 syntax.', 'parameters': {'type': 'dict', 'required': ['category'], 'properties': {'color': {'type': 'string', 'description': 'The color of the product. This is an optional parameter that can be used to refine SKU searches.', 'default': None}, 'size': {'type': 'string', 'description': 'The size of the product. This is an optional parameter that can be used to refine SKU searches.', 'default': None}, 'category': {'type': 'string', 'description': "The category of the product, such as 'electronics', 'clothing', 'shoes' or 'furniture'. This parameter is required for both SPU and SKU level searches."}, 'price_min': {'type': 'float', 'description': 'The minimum price of the product search. Enter a float value representing the lowest price in dollars.', 'default': 0.0}, 'price_max': {'type': 'float', 'description': 'The maximum price of the product search. Enter a float value representing the highest price in dollars.', 'default': None}, 'brand': {'type': 'string', 'description': 'The brand of the product. This is an optional parameter for searching within a specific brand.', 'default': None}}}}, {'name': 'get_product_details', 'description': 'Retrieve detailed information about a specific product, including options for size, color, material, and care instructions. Note that the provided function is in Python 3 syntax.', 'parameters': {'type': 'dict', 'required': ['item_id'], 'properties': {'item_id': {'type': 'string', 'description': 'The unique identifier of the product, required to fetch specific product details.'}, 'color': {'type': 'string', 'description': 'The color of the product. Specify this parameter to filter product details by color.', 'default': 'any'}, 'size': {'type': 'string', 'description': 'The size of the product. Specify this parameter to filter product details by size.', 'default': 'any'}, 'detailLevel': {'type': 'string', 'description': "The level of detail required for the product information. Use 'SKU' for size and color details.", 'enum': ['SKU', 'Basic'], 'default': 'Basic'}, 'material': {'type': 'string', 'description': 'The material of the product. This parameter is optional and can be used to filter product details.', 'default': 'all'}, 'care_instructions': {'type': 'boolean', 'description': 'Whether to include care instructions in the product details. If true, care instructions will be included.', 'default': False}}}}]


user: Do you have any red shoes in size 8?

Available functions:
[{"name": "search_products", "description": "Search for products based on various criteria such as color, size, category, price range, and brand, to find specific Stock Keeping Units (SKUs) or general Stock Production Units (SPUs).", "parameters": {"type": "dict", "required": ["category"], "properties": {"color": {"type": "string", "description": "The color of the product. This is an optional parameter that can be used to refine SKU searches.", "default": null}, "size": {"type": "string", "description": "The size of the product. This is an optional parameter that can be used to refine SKU searches.", "default": null}, "category": {"type": "string", "description": "The category of the product, such as 'electronics', 'clothing', 'shoes' or 'furniture'. This parameter is required for both SPU and SKU level searches."}, "price_min": {"type": "float", "description": "The minimum price of the product search. Enter a float value representing the lowest price in dollars.", "default": 0.0}, "price_max": {"type": "float", "description": "The maximum price of the product search. Enter a float value representing the highest price in dollars.", "default": null}, "brand": {"type": "string", "description": "The brand of the product. This is an optional parameter for searching within a specific brand.", "default": null}}}}, {"name": "get_product_details", "description": "Retrieve detailed information about a specific product, including options for size, color, material, and care instructions.", "parameters": {"type": "dict", "required": ["item_id"], "properties": {"item_id": {"type": "string", "description": "The unique identifier of the product, required to fetch specific product details."}, "color": {"type": "string", "description": "The color of the product. Specify this parameter to filter product details by color.", "default": "any"}, "size": {"type": "string", "description": "The size of the product. Specify this parameter to filter product details by size.", "default": "any"}, "detailLevel": {"type": "string", "description": "The level of detail required for the product information. Use 'SKU' for size and color details.", "enum": ["SKU", "Basic"], "default": "Basic"}, "material": {"type": "string", "description": "The material of the product. This parameter is optional and can be used to filter product details.", "default": "all"}, "care_instructions": {"type": "boolean", "description": "Whether to include care instructions in the product details. If true, care instructions will be included.", "default": false}}}}]

Ground-truth function call:
[{"search_products": {"color": ["red"], "size": ["8"], "category": ["shoes"], "price_min": ["", 0.0], "price_max": ["", null], "brand": ["", null]}}]