You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you?

USER: Could you please book a flight ticket from ATL to DCA?

ASSISTANT: May I know on what dates would you like to travel?

USER: I want to travel on Mar 27 and return on Mar 29.

ASSISTANT: Do you prefer a direct or connecting flight?

USER: I am comfortable with any flight.

ASSISTANT: Do you have any other requirements to be met?

USER: No.

ASSISTANT: Can I have your name please?

USER: My name is Gregory Evans.

ASSISTANT: Delta airlines providing a connecting flight and 1000 is your flight number.

USER: Ok, proceed with the booking.

ASSISTANT: Your booking is done.

USER: Thank you.

ASSISTANT: Thank you.