You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you today?

USER: I am Jennifer Edwards. I am doing a new project to submit in Innovation Festival at AUS. Can you please help me to book a flight on 11/27?

ASSISTANT: Sure, please share your origin airport code.

USER: My origin airport code is OAK.

ASSISTANT: When you would like to return?

USER: I would like to return on 11/29.

ASSISTANT: Do you prefer economy class or business class?

USER: I am comfortable in any class to fly.

ASSISTANT: Ok, we found a Delta airline with 1011 flight number and fare is 200. Shall I proceed?

USER: Ok, you can proceed.

ASSISTANT: Your ticket is confirmed in economy class.

USER: Thank you for the service.

ASSISTANT: Thank you for availing us.