1. An adaptation method for a speech system of a vehicle, comprising: receiving, by a processor, a first set of speech data recorded during a defined speech window, wherein the defined speech window begins once a system prompt has completed and ends at a predetermined time after the defined speech window begins; receiving, by a processor, a second set of speech data, wherein the second set of speech data comprises data recorded during the defined speech window and at least one of data recorded before the defined speech window and data recorded after the defined speech window; determining, by the processor, a speech pace based on the second set of speech data; determining, by the processor, a user model based on the speech pace; and generating, by the processor, adaptation parameters for processing the first set of speech data by at least one of a speech recognition system and a dialog manager based on the user model.