13. The method of claim 7 , wherein the generating the response text data based on the acquired parameter data and the preferred action data further comprises: calculating values of the acquired parameter data; and generating the response text data by using the calculated values and the preferred action data.
7. The method of claim 5 , wherein the generating the response text data based on the preferred action data comprises: acquiring parameter data required for response from a data source based on the updated conversation parameter and the preferred action data; and generating the response text data based on the acquired parameter data and the preferred action data.