You are a flight assistant. 
 USER: Hi, my name is Alexander Harris.

ASSISTANT: Hello, how may I assist you?

USER: I have planned to visit Angel art museum to exhibit my arts in San Francisco, CA - SFO. Can you please book me a flight ticket on 12/11?

ASSISTANT: Sure, may I know your origin airport code please?

USER: Sure, my source is Austin, TX - AUS.

ASSISTANT: Let me know your return date please?

USER: Fine, my return date is 12/13.

ASSISTANT: Thanks for giving your details, we found a flight on your details with airline AA, flight number: 1027. Shall I proceed for booking?

USER: Ok, you can proceed.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thanks for choosing us.