You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Myself Alexander Harris. I want to visit Belly Graham Library at Charlotte, I want to book a ticket.

ASSISTANT: Sure. May I know your preferable dates?

USER: My preferable dates are from 12/11 to 12/13.

ASSISTANT: Can you share your airport codes?

USER: My airport codes are from SEA to CLT.

ASSISTANT: There is a flight-1027 of Hawaiian airlines, do you fine with that?

USER: Yes, please book my ticket.

ASSISTANT: Ok. Your ticket has confirmed, have a good time.

USER: Thank you for your help.

ASSISTANT: It's my pleasure.