system: 
You are an expert in composing functions. You are given a question and a set of possible functions.
Based on the question, you will need to make one or more function/tool calls to achieve the purpose.
If none of the function can be used, point it out. If the given question lacks the parameters required by the function,
also point it out. You should only return the function call in tools call sections.

If you decide to invoke any of the function(s), you MUST put it in the format of [func_name1(params_name1=params_value1, params_name2=params_value2...), func_name2(params)]

You SHOULD NOT include any other text in the response.

Here is a list of functions in JSON format that you can invoke.

[{'name': 'EventQuery', 'description': "Search for calendar events that match a given text query within a user's calendar. The search considers both the title and description of the events. Note that the provided function is in Python 3 syntax.", 'parameters': {'type': 'dict', 'required': ['search_string'], 'properties': {'search_string': {'type': 'string', 'description': 'The text to search for within the title and description of an event.'}, 'start_date': {'type': 'string', 'description': "The start date for the range of events to search, in the format 'YYYY-MM-DD'.", 'default': 'null'}, 'end_date': {'type': 'string', 'description': "The end date for the range of events to search, in the format 'YYYY-MM-DD'.", 'default': 'null'}, 'include_recurring': {'type': 'boolean', 'description': 'A flag to indicate whether to include recurring events in the search.', 'default': False}}}}, {'name': 'reschedule_event', 'description': 'Reschedule an event by assigning it a new date or time based on the provided ISO-8601 datetime string. Note that the provided function is in Python 3 syntax.', 'parameters': {'type': 'dict', 'required': ['event_identifier', 'new_datetime'], 'properties': {'event_identifier': {'type': 'string', 'description': 'A unique identifier for the event, such as a UUID.'}, 'new_datetime': {'type': 'string', 'description': "The new date and time to which the event is being rescheduled, in ISO-8601 format (e.g., 'YYYY-MM-DDTHH:MM:SSZ')."}}}}]


user: When is my gym session?

Available functions:
[{"name": "EventQuery", "description": "Search for calendar events that match a given text query within a user's calendar. The search considers both the title and description of the events.", "parameters": {"type": "dict", "required": ["search_string"], "properties": {"search_string": {"type": "string", "description": "The text to search for within the title and description of an event."}, "start_date": {"type": "string", "description": "The start date for the range of events to search, in the format 'YYYY-MM-DD'.", "default": "null"}, "end_date": {"type": "string", "description": "The end date for the range of events to search, in the format 'YYYY-MM-DD'.", "default": "null"}, "include_recurring": {"type": "boolean", "description": "A flag to indicate whether to include recurring events in the search.", "default": false}}}}, {"name": "reschedule_event", "description": "Reschedule an event by assigning it a new date or time based on the provided ISO-8601 datetime string.", "parameters": {"type": "dict", "required": ["event_identifier", "new_datetime"], "properties": {"event_identifier": {"type": "string", "description": "A unique identifier for the event, such as a UUID."}, "new_datetime": {"type": "string", "description": "The new date and time to which the event is being rescheduled, in ISO-8601 format (e.g., 'YYYY-MM-DDTHH:MM:SSZ')."}}}}]

Ground-truth function call:
[{"EventQuery": {"search_string": ["gym session"], "start_date": ["", "null"], "end_date": ["", "null"], "include_recurring": ["", false]}}]