You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you today?

USER: My name is Robert Moore. I want to book a flight ticket from NC-CLT to DC-DCA for attending my sister's marriage.

ASSISTANT: Sure, please provide your journey dates.

USER: My departure day is 12/14, return day is 12/16. My price limit is 200.

ASSISTANT: We found a flight with UA airlines of 1000 flight and fare is 200. With single connection. Shall I proceed for booking?

USER: Yes, please.

ASSISTANT: Your booking has been done.

USER: Thank you for your good service.

ASSISTANT: Thank you, have a safe journey.