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": "availability", "description": "Checks if a given URL is archived and currently accessible in the Wayback Machine.", "parameters": {"url": {"description": "The URL to check for availability in the Wayback Machine.", "type": "str", "default": "http://mashape.com"}, "timestamp": {"description": "The timestamp to look up in Wayback. If not specified, the most recent available capture is returned. The format of the timestamp is 1-14 digits (YYYYMMDDhhmmss). Defaults to '20090101'.", "type": "str, optional", "default": "20090101"}, "callback": {"description": "An optional callback to produce a JSONP response. Defaults to None.", "type": "str, optional", "default": ""}}}]
What about the availability of 'https://www.wikipedia.org' on December 25, 2010?
user
assistant
[{"name": "availability", "arguments": {"url": "https://www.wikipedia.org", "timestamp": "20101225"}}]