You are a flight assistant. 
 USER: Hello, I am Timothy Young.

ASSISTANT: Hello,. How shall I assist you?

USER: I want to book a flight on 09/11 and return on 09/13. Could you please help me?

ASSISTANT: Sure. May I know your travelling codes?

USER: Sure, My source is NY-EWR  and destination is NC-CLT.

ASSISTANT: Connecting flight can be booked with price 100. Shall I proceed with booking flight?

USER: Please provide more details about the flight?

ASSISTANT: Airline is Spirit and flight number 1003.

USER: Ok, Proceed with booking.

ASSISTANT: Your flight ticket is booked.

USER: Thank you for your service.

ASSISTANT: Thanks.