You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you today?

USER: I am Mark Walker, I am passionate towards books, I am planning to visit The Billy Graham library at Charlotte. Can you help me to book a flight ticket?

ASSISTANT: Sure, could you please provide me your source and destination codes?

USER: My source is San Francisco, SFO and destination is CLT.

ASSISTANT: May I know your planned travel dates?

USER: I want to travel on 06/30 and return on 07/02.

ASSISTANT: Do you need a halt in between your journey?

USER: I need a halt.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: We found an airline: UA, flight number: 1021 and price is 300 with one connection.

USER: You can proceed for booking.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you.

ASSISTANT: Thank you for reaching us.