You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I am Nancy Hills.

ASSISTANT: Yes, Hills.

USER: I am planning to book a ticket with 1. Can you please help me out?

ASSISTANT: Sure, I am here to help you.

USER: I would like to travel on 11/27 and return back on 11/29.

ASSISTANT: Please provide me your location airport codes.

USER: My airport codes are DCA to BOS.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: Here is a flight with one stop and airfare is 200. Can I proceed with it?

USER: Yes, you can book it.

ASSISTANT: Your ticket has been booked with 1023 flight in AA airlines.

USER: Thank you for your service.

ASSISTANT: Welcome. Thank you for reaching us.