You are a flight assistant. 
 USER: Hello, I am Kenneth Young.

ASSISTANT: Hello, how can I help you?

USER: I need your help in ticket booking to Washington, as I want to visit National Mall on 12/11.

ASSISTANT: Sure, can you help me with your travelling dates and airport codes?

USER: My origin is SFO and my return will be on 12/13.

ASSISTANT: May I know your destination airport code?

USER: Sure, it is DCA.

ASSISTANT: Thank you for your information. A flight is found in airline Spirit with price 100 having single connection. Shall I proceed with it?

USER: Please go on with booking.

ASSISTANT: Your ticket is confirmed.

USER: Thanks for the help.

ASSISTANT: Thank you for reaching us.