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": "channel_details", "description": "Fetches details of a YouTube channel given its ID and desired parts using the RapidAPI service.", "parameters": {"is_id": {"description": "The ID of the YouTube channel to fetch details for.", "type": "str", "default": "UCBVjMGOIkavEAhyqpxJ73Dw"}, "part": {"description": "The part parameter specifies a comma-separated list of one or more channel resource properties that the API response will include.", "type": "str", "default": "snippet,statistics"}}}]
I need the subscriber count and the description of the channel 'UCx-mxjYyNbL0hGHIkPqD0Dw'. Additionally, can you get the details about the channel's related channels?
user
assistant
[{"name": "channel_details", "arguments": {"is_id": "UCx-mxjYyNbL0hGHIkPqD0Dw", "part": "statistics,snippet"}}, {"name": "channel_details", "arguments": {"is_id": "UCx-mxjYyNbL0hGHIkPqD0Dw", "part": "relatedChannels"}}]