You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am John Gonzalez here.

ASSISTANT: How may I aid you?

USER: I am planning to book a flight ticket from ATL to SFO. Will you please help me in booking a flight ticket?

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

USER: I prefer to travel on 11/16 and return back on 11/18.

ASSISTANT: Spirit airlines is available in your route with the fare of 100, shall I proceed with the booking?

USER: That's fine for me, please proceed for booking the flight ticket.

ASSISTANT: Your ticket is booked with the flight 1002.

USER: Thank you for help in booking.

ASSISTANT: Thank you for reaching us.