You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Robert Moore.

ASSISTANT: How can I assist you?

USER: I am planning to visit Central Park at New York, could you please help me with booking a flight ticket?

ASSISTANT: Can I know your travel dates?

USER: I would like to take off on 11/13 and return on 11/15.

ASSISTANT: Can I know your airport codes?

USER: My nearest source airport code is DCA and destination airport code is JFK.

ASSISTANT: The flight 1000 of Delta airlines is available on your requested dates with a price of 100. Shall I proceed?

USER: Please proceed with the booking.

ASSISTANT: Moore, your ticket is booked successfully.

USER: Thank you for your service.

ASSISTANT: You are welcome.