You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I guide you?

USER: I am Joshua Lee. I would like to book a flight ticket from ATL to SFO.

ASSISTANT: Sure, can I know your preferable dates?

USER: I am starting on 09/07 and return back on 09/09.

ASSISTANT: I found a flight 1027 of Delta airlines matches with your preferences, can I proceed?

USER: Yes, please proceed.

ASSISTANT: Your ticket is booked.

USER: Thank you for the help?

ASSISTANT: Thank you, have a good day.