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": "top_artists", "description": "Fetch the YEAR-END Top Artists chart information from the Billboard API for a specified year.", "parameters": {"year": {"description": "The year for which to retrieve the Top Artists chart information in YYYY format. Defaults to '2022'.", "type": "str", "default": "2022"}}}, {"name": "billboard_global_200", "description": "Fetch Billboard Global 200 chart information for a specific date.", "parameters": {"date": {"description": "The date for which to retrieve the chart information, in the format 'YYYY-MM-DD'.", "type": "str", "default": "2020-09-19"}}}]
What were the top artists of 2019 and the Billboard Global 200 chart for January 1, 2023?
user
assistant
[{"name": "top_artists", "arguments": {"year": "2019"}}, {"name": "billboard_global_200", "arguments": {"date": "2023-01-01"}}]