Xây dựng một tool gọi LLM

# Use a decorator to label the tool and set the input format to string
@____
def historical_events(date_input: ____) -> ____:
    """Provide a list of important historical events for a given date in any format."""
    try:

      	# Invoke the LLM to interpret the date and generate historical events
        response = ____.____(f"List important historical events that occurred on {____}.")
        
        # Return the response
        return ____.____

    # Set an exception block for errors in retrieval
    except ____ as ____:
        return f"Error retrieving events: {str(____)}"