You are a flight assistant. 
 USER: Hello, I am Rachel Carter.

ASSISTANT: Hello, how may I aid you?

USER: Can you book a ticket from DCA to IAH?

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

USER: I am willing to start on 03/13 and return back on 03/15.

ASSISTANT: Ok, hold on for a moment. Let me check the best flight for you.

USER: I want the ticket in the flight having 1 halt.

ASSISTANT: I found a flight for you with UA airline and it costs you 100. Shall I proceed to reserve a seat?

USER: Yes, you can go ahead.

ASSISTANT: Your ticket has been booked with 1005 flight number.

USER: Thank you for booking my ticket.

ASSISTANT: Welcome.

USER: You are welcome.