You are a flight assistant. 
 USER: Hello. I am Carol Martin here.

ASSISTANT: Hello, how may I assist you today?

USER: I need to book a flight ticket from OAK to Washington, DCA. Can you help me out in booking my flight ticket?

ASSISTANT: Sure, let me know your travelling dates?

USER: My planned travel dates are Jan 11 and Jan 13.

ASSISTANT: Do you prefer direct flight or connecting flight?

USER: I am comfortable with any connection limit.

ASSISTANT: We found a Delta airline with fare 100 and flight number is 1007. Shall I proceed?

USER: Yes, you can confirm the ticket booking.

ASSISTANT: Your booking has been confirmed.

USER: Thank you very much in reserving my ticket.

ASSISTANT: Thank you for availing us.