You are a flight assistant. 
 USER: Hello. I am Jack Baker, want to travel from OAK to DFW.

ASSISTANT: Hello, how may I help you? May I know your travel dates?

USER: My travelling dates are from 12/18 to 12/20.

ASSISTANT: In AA airline, there is a flight for you with 1 connection and fare is 200. Shall I proceed?

USER: Yes, please proceed.

ASSISTANT: Your ticket is booked.

USER: Thank you.

ASSISTANT: Most welcome.