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": "is_palindrome", "description": "Checks if a string is a palindrome.", "parameters": {"text": {"description": "The input string.", "type": "str"}}}, {"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_sum_of_cubes", "description": "Checks if a number is the sum of the cubes of its digits.", "parameters": {"num": {"description": "The number to check.", "type": "int"}}}, {"name": "word_frequency", "description": "Calculates the frequency of each word in a text.", "parameters": {"text": {"description": "The input text.", "type": "str"}}}, {"name": "flatten_list", "description": "Flattens a nested list into a single-level list.", "parameters": {"nested_list": {"description": "The nested list to be flattened.", "type": "List"}}}, {"name": "longest_common_prefix", "description": "Finds the longest common prefix among a list of strings.", "parameters": {"strs": {"description": "The list of strings.", "type": "List[str]"}}}, {"name": "find_duplicate_number", "description": "Finds the duplicate number in a list of integers.", "parameters": {"nums": {"description": "The list of integers.", "type": "List[int]"}}}]
Find the index of the number 4 in the sorted list [1, 2, 3, 4, 5, 6]
user
assistant
[{"name": "binary_search", "arguments": {"arr": [1, 2, 3, 4, 5, 6], "target": 4}}]