You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I help you?

USER: I want to visit Austin, TX - AUS for site seeing, Can you please book a ticket on 09/02?

ASSISTANT: Sure, May I know the source code?

USER: Sure, my source is Washington, DC - DCA.

ASSISTANT: Please help me with your return date.

USER: I intend to return on 09/04.

ASSISTANT: May I know your name?

USER: Sure, I am Jeffrey Collins.

ASSISTANT: Please wait a minute.

USER: Ok.

ASSISTANT: We have found a direct flight from AA airline. Shall I proceed?

USER: Sure, please proceed for booking.

ASSISTANT: Ok. Your ticket has been booked with the flight number 1023.

USER: Thanks for booking.

ASSISTANT: Thank you for availing us.