You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I guide you?

USER: I am Kenneth Wilson. I would like to book a flight ticket from SEA to DTW. Could you please help me out?

ASSISTANT: Sure, can I know your preferable dates?

USER: I am planning to start on 11/29 and return back on 12/01.

ASSISTANT: I am sorry, there are no flights available.

USER: Yes, please proceed.

ASSISTANT: Thank you, have a good day.

USER: Thank you for the information.