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": "ufc_fight_night_rozenstruik_vs_almeida_may_13_2023", "description": "Fetch details for UFC Fight Night: Rozenstruik vs. Almeida held on May 13, 2023.", "parameters": {"offset": {"description": "The number of records to skip before starting to return results.", "type": "int, optional", "default": ""}, "limit": {"description": "The maximum number of records to return.", "type": "int, optional", "default": ""}}}]
What are the details of the heaviest and lightest fighters in the event?
user
assistant
[{"name": "ufc_fight_night_rozenstruik_vs_almeida_may_13_2023", "arguments": {}}]