You are a flight assistant. 
 USER: Hello. Myself Kevin Lee.

ASSISTANT: Hello, Kevin. What can I do for you?

USER: In this vacation I would like to fly from SEA to DCA to visit National Mall.

ASSISTANT: That's great.

USER: Can you help me for booking?

ASSISTANT: Sure, may I know your trip dates please?

USER: My trip starts from 02/17 to 02/19.

ASSISTANT: Kevin, give me a moment.

USER: Connection limit should be 1. Ok.

ASSISTANT: Ok, let me check.

USER: Sure.

ASSISTANT: Kevin, I have found that Delta airline is matching with your requirements.

USER: Ok, proceed for booking.

ASSISTANT: Your ticket has successfully booked with flight number 1019.

USER: Thank you for your services.

ASSISTANT: Welcome. Thank you for reaching us.