You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what kind of help are you expecting from our agency?

USER: Please book me a flight ticket from to Washington DCA to attend my sister marriage.

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Please, share your journey dates.

USER: I would like to start on 07/29 and return on 07/31.

ASSISTANT: Kindly, mention your full journey airport codes.

USER: I will fly from DTW to DCA.

ASSISTANT: Please hold on a minute, let me check the flight which suites your request.

USER: Sure.

ASSISTANT: You have a flight with airline AA and flight number is 1027 with a halt and price is 200. Can I reserve your seat?

USER: Please reserve my seat.

ASSISTANT: May I know your good name for further process?

USER: I am John Gonzalez.

ASSISTANT: Your reservation is done.

USER: Thank you.

ASSISTANT: Thank you for choosing us, hope we serve you next time.