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_missing_ranges", "description": "Finds the missing ranges between lower and upper in a sorted list of integers.", "parameters": {"nums": {"description": "The sorted list of integers.", "type": "List[int]"}, "lower": {"description": "The lower bound.", "type": "int"}, "upper": {"description": "The upper bound.", "type": "int"}}}, {"name": "binary_search", "description": "Performs binary search on a sorted list to find the index of a target value.", "parameters": {"arr": {"description": "The sorted list of integers.", "type": "List[int]"}, "target": {"description": "The target value to search for.", "type": "int"}}}, {"name": "find_max_subarray_sum", "description": "Finds the maximum sum of a contiguous subarray within a list of integers.", "parameters": {"nums": {"description": "The input list of integers.", "type": "List[int]"}}}, {"name": "is_palindrome", "description": "Checks if a string is a palindrome.", "parameters": {"text": {"description": "The input string.", "type": "str"}}}, {"name": "find_files", "description": "Finds all files with a specific extension in a directory and its subdirectories.", "parameters": {"directory": {"description": "The directory to search in.", "type": "str"}, "extension": {"description": "The file extension to search for.", "type": "str"}}}, {"name": "find_first_non_repeating_char", "description": "Finds the first non-repeating character in a string.", "parameters": {"s": {"description": "The input string.", "type": "str"}}}]
Find all .jpg files in the directory '/home/user/pictures'. Also, find the first non-repeating character in the string 'racecar'.
user
assistant
[{"name": "find_files", "arguments": {"directory": "/home/user/pictures", "extension": ".jpg"}}, {"name": "find_first_non_repeating_char", "arguments": {"s": "racecar"}}]