18. The method of claim 16 , wherein the generating the first dialog turn information comprises: recognizing the user speech and analyzing the user speech into speech elements; extracting sentence pattern information, modal information, and discourse marker information using the speech elements; and generating the first dialog turn information using the sentence pattern information, the modal information, and the discourse marker information.
18. The method of claim 16 , wherein the generating the first dialog turn information comprises: recognizing the user speech and analyzing the user speech into speech elements; extracting sentence pattern information, modal information, and discourse marker information using the speech elements; and generating the first dialog turn information using the sentence pattern information, the modal information, and the discourse marker information. 19. The method of claim 18 , wherein the speech elements comprise morphemes.