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": "playlist_details", "description": "Fetches the details of a YouTube playlist based on the provided playlist ID and part specifications.", "parameters": {"is_id": {"description": "The ID of the playlist to fetch details for.", "type": "str", "default": "RDZiQo7nAkQHU"}, "part": {"description": "The part parameter specifies a comma-separated list of one or more playlist resource properties that the API response will include.", "type": "str", "default": "snippet"}}}]
Fetch the details of the YouTube playlist with ID 'PL772F05D8E1B64E81' including the title, description, and number of videos. Also, get the details of the playlist with ID 'PL22C3F5D38969A9D1' including the title and author.
user
assistant
[{"name": "playlist_details", "arguments": {"is_id": "PL772F05D8E1B64E81", "part": "snippet,contentDetails"}}, {"name": "playlist_details", "arguments": {"is_id": "PL22C3F5D38969A9D1", "part": "snippet"}}]