You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Can you help me to book a flight ticket from DCA to PHL?

ASSISTANT: Sure, I am glad to help you out with that. Can you please share your travel dates?

USER: My travelling dates are 16 and 18 of Mar.

ASSISTANT: Do you have any connecting flight?

USER: Yes, I need a break in between journey.

ASSISTANT: May I know your airline preference?

USER: No.

ASSISTANT: Do you have any requirements?

USER: I don't have any other specifications.

ASSISTANT: May I know your name please?

USER: I am Justin Walker.

ASSISTANT: Delta airlines is having a flight with a ticket fare 200, shall I proceed with booking?

USER: Please proceed.

ASSISTANT: Your ticket has been confirmed with the flight-1001 in economy class.

USER: Thanks for helping me.

ASSISTANT: Welcome, have a safe trip.