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": "format_date", "description": "Converts a date string from one format to another.", "parameters": {"date": {"description": "The date string to convert.", "type": "str"}, "input_format": {"description": "The format of the input date string.", "type": "str"}, "output_format": {"description": "The desired format of the output date string.", "type": "str"}}}, {"name": "word_frequency", "description": "Calculates the frequency of each word in a text.", "parameters": {"text": {"description": "The input text.", "type": "str"}}}]
Find the word frequency in the technical document excerpt: 'Data analysis is crucial for decision making. Analysis of data requires careful consideration.'
user
assistant
[{"name": "word_frequency", "arguments": {"text": "Data analysis is crucial for decision making. Analysis of data requires careful consideration."}}]