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": "yh_historical", "description": "Retrieves the historical data for a given stock ticker within specified date ranges.", "parameters": {"ticker": {"description": "The ticker symbol of the stock.", "type": "str", "default": ""}, "sdate": {"description": "The start date for retrieving historical data in YYYY-MM-DD format.", "type": "str", "default": ""}, "edate": {"description": "The end date for retrieving historical data in YYYY-MM-DD format.", "type": "str", "default": ""}}}]
Please find the historical data for IBM (IBM) from the start of 2010 to the end of 2010 and for HP (HPQ) from the start of 2011 to the end of 2011.
user
assistant
[{"name": "yh_historical", "arguments": {"ticker": "IBM", "sdate": "2010-01-01", "edate": "2010-12-31"}}, {"name": "yh_historical", "arguments": {"ticker": "HPQ", "sdate": "2011-01-01", "edate": "2011-12-31"}}]