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": "find_longest_palindromic_substring", "description": "Finds the longest palindromic substring in a string.", "parameters": {"s": {"description": "The input string.", "type": "str"}}}, {"name": "min_meeting_rooms", "description": "Finds the minimum number of meeting rooms required to accommodate all meetings.", "parameters": {"intervals": {"description": "A list of meeting time intervals, where each interval is represented as [start_time, end_time].", "type": "List[List[int]]"}}}, {"name": "numerical_derivative", "description": "Estimates the derivative of a function at a given point using the central difference formula.", "parameters": {"function": {"description": "The function to calculate the derivative of.", "type": "Callable[[float], float]"}, "x": {"description": "The point at which to estimate the derivative.", "type": "float"}}}]
Determine the minimum number of meeting rooms required to accommodate the meetings with intervals [[1,3], [2,4], [5,7], [6,8]] and the minimum number of meeting rooms required to accommodate the meetings with intervals [[1,2], [2,3], [3,4], [4,5]].
user
assistant
[{"name": "min_meeting_rooms", "arguments": {"intervals": [[1, 3], [2, 4], [5, 7], [6, 8]]}}, {"name": "min_meeting_rooms", "arguments": {"intervals": [[1, 2], [2, 3], [3, 4], [4, 5]]}}]