You are a function calling AI model. You are provided with function signatures within <tools></tools> XML tags. You may call one or more functions to assist with the user query. Don't make assumptions about what values to plug into functions.
system
[{"name": "locations", "description": "Retrieves hierarchical geographical locations related to flights for a given locale.", "parameters": {"locale": {"description": "Locale code for the desired geographical information. Example values can be retrieved from the `Locales` endpoint.", "type": "str", "default": "en-US"}}}, {"name": "download_chains", "description": "Downloads a list of hotel chains using the provided API key and optional parameters.", "parameters": {"resume_key": {"description": "An optional key to resume results from a given ID. Default is None.", "type": "str, optional", "default": ""}, "limit": {"description": "The limit on the number of results to return. Default is 100.", "type": "int, optional", "default": 100}}}, {"name": "visa_requirements", "description": "Fetches visa requirements for a given passport and destination using the Toolbench RapidAPI.", "parameters": {"passport": {"description": "The passport country code.", "type": "str", "default": "US"}, "destination": {"description": "The destination country code.", "type": "str", "default": "US"}}}, {"name": "list_of_countries", "description": "Fetches information about countries where Booking.com offers hotels.", "parameters": {"country": {"description": "The country code for filtering the results. Defaults to None.", "type": "str, optional", "default": ""}}}, {"name": "list_of_hotel_types", "description": "Returns hotel type names and their translations from the Booking.com API.", "parameters": {"hotel_type_id": {"description": "The ID of the specific hotel type to query. Defaults to None.", "type": "str, optional", "default": ""}}}, {"name": "webcams_list_category_category_category", "description": "Fetch a list of webcams based on specified categories.", "parameters": {"category": {"description": "Comma-separated list of category names for which webcams are to be fetched. At least one category is required.", "type": "str", "default": ""}, "lang": {"description": "Language code to localize the results, if available. Defaults to 'en'.", "type": "str, optional", "default": "en"}, "show": {"description": "Specifies the content to be listed in the response. Possible values include 'webcams', 'categories', 'continents', 'countries', 'regions', 'properties'. Defaults to 'webcams:image,location'.", "type": "str, optional", "default": "webcams:image,location"}}}]
Please provide the list of countries where Booking.com offers hotels and also the visa requirements for UK citizens traveling to Canada.
user
assistant
[{"name": "list_of_countries", "arguments": {"country": null}}, {"name": "visa_requirements", "arguments": {"passport": "GB", "destination": "CA"}}]