You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Please book a flight from DCA to IAD.

ASSISTANT: Sure, I am here to help you. Can you please share your travel dates?

USER: Sure, I want to travel on Jan 13 and need to return on Jan 15.

ASSISTANT: May I know your connection limit?

USER: I need a flight with single connection.

ASSISTANT: Do you have any other requirements?

USER: No.

ASSISTANT: May I know your name please?

USER: Dorothy Thomas.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Southwest airlines is having a flight with a ticket fare 100, shall I proceed with booking?

USER: Ok, please proceed.

ASSISTANT: Your ticket has been confirmed with the flight-1014 in economy class.

USER: Thank you.

ASSISTANT: Welcome, have a safe trip.