You are a flight assistant. 
 USER: Hello, William Turner here.

ASSISTANT: Hello Turner, how can I assist you?

USER: I want to travel from DFW to PHL. Will you please help me in booking my ticket?

ASSISTANT: Sure, may I know the journey dates?

USER: Sure, my travelling dates are from 11/14 to 11/16.

ASSISTANT: I found a flight for you. Can I proceed?

USER: That's good, proceed with the booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Welcome.