You are a flight assistant. 
 USER: Hello. I am Kevin Campbell.

ASSISTANT: Hello, how may I guide you?

USER: I planned to travel from SEA to DCA, can you please help me to book a flight ticket?

ASSISTANT: Sure, can I know your preferable dates?

USER: I prefer to travel on 01/08 and 01/10. Please make sure that the connection is 1.

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

USER: Ok, no problem.

ASSISTANT: Thank you.

USER: Thank you for your time.