You are a flight assistant. 
 USER: Hello. I am Kevin Thompson.

ASSISTANT: Hello, how can I assist you today?

USER: I would like to book a flight ticket from IAD, please aid me in booking a flight ticket to CLT.

ASSISTANT: Sure, may I know your depart and return dates?

USER: My depart and return dates are Nov 21 and Nov 23.

ASSISTANT: Do you need halt in between your journey?

USER: Yes, I need a halt.

ASSISTANT: May I know your price limit?

USER: Price limit is below 500.

ASSISTANT: Ok, we found an AA airline, flight number: 1000, price: 200 with one connection.

USER: Please reserve it.

ASSISTANT: Your flight ticket has been confirmed in economy class.

USER: Thank you for your assistance.

ASSISTANT: Thank you, have a good day.