You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Could you please book a flight ticket to Charlotte, CLT?

ASSISTANT: Sure. Ok, From which city airport you want to board?

USER: I want to start my journey from Washington-IAD.

ASSISTANT: Do you prefer direct flight?

USER: No, I need a connecting flight.

ASSISTANT: Let me know your trip dates.

USER: Apr 29 and May 01 are the travel dates.

ASSISTANT: May I know your good name?

USER: I am Robert Hall.

ASSISTANT: Please, wait.

USER: Sure.

ASSISTANT: There is a flight with American airline, flight number 1005, price 200, class economy. Shall I proceed?

USER: Yes, please proceed to reserve a seat for me.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you for assisting me.

ASSISTANT: Thank you for choosing us.