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": "time_series", "description": "Fetches daily historical rates for a given commodity or currency between two specified dates using the Toolbench RapidAPI.", "parameters": {"base": {"description": "Three-letter currency code or commodity code representing the base currency.", "type": "str", "default": "USD"}, "symbols": {"description": "Three-letter currency code or commodity code for the target currency or commodity.", "type": "str", "default": "BRENTOIL"}, "end_date": {"description": "The end date of the timeframe for which the historical rates are requested (in 'YYYY-MM-DD' format).", "type": "str", "default": "2022-01-20"}, "start_date": {"description": "The start date of the timeframe for which the historical rates are requested (in 'YYYY-MM-DD' format).", "type": "str", "default": "2022-01-10"}}}]
Get the daily historical rates for Silver (XAG) against the Euro (EUR) from January 1, 2021 to December 31, 2021.
user
assistant
[{"name": "time_series", "arguments": {"base": "XAG", "symbols": "EUR", "start_date": "2021-01-01", "end_date": "2021-12-31"}}]