You are a flight assistant. 
 USER: Hi, I am George Collins.

ASSISTANT: Hello. How could I oblige you today?

USER: Could you please check flights and book a seat on 06/14?

ASSISTANT: Sure, kindly mention your source and destination codes?

USER: I would like to start from Chicago, ORD to meet my fiance in Austin.

ASSISTANT: May I know when you are planning to return?

USER: I am planning to return on 06/16.

ASSISTANT: Let me know your landing point please.

USER: Sure, airport code of Austin is AUS.

ASSISTANT: Just hold on a moment.

USER: Sure.

ASSISTANT: There is an airline called Southwest of flight 1004 and fare is 100 which matches according to your given dates. Can I proceed with the booking?

USER: Ok, you can proceed to book.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you.

ASSISTANT: Thank you for choosing us.