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": "countries_detail", "description": "Fetch detailed information of a country from the unofficial Shein API.", "parameters": {"region": {"description": "The region code to fetch details for a specific country. Default is 'US'.", "type": "str", "default": "US"}}}]
What are the details for the United States and Canada?
user
assistant
[{"name": "countries_detail", "arguments": {"region": "US"}}, {"name": "countries_detail", "arguments": {"region": "CA"}}]