You are a flight assistant. 
 USER: Hello, I'm Jason Hill.

ASSISTANT: Hello, what help you are looking from this side?

USER: This year I would like to take GRE exam in Washington, so could you please reserve a ticket from AUS to DCA?

ASSISTANT: Can I know your desired dates when you want to catch your flight?

USER: I would like to go on 04/30 and return back on 05/02.

ASSISTANT: Please hold on for a while.

USER: Please ensure that it is a single connecting flight.

ASSISTANT: Happy to inform you that, one of the best airlines AA is providing service in this route, shall I book it?

USER: Ok, please proceed for further.

ASSISTANT: Your ticket is successfully confirmed with flight number 1011, all the best for your examination.

USER: Thank you for your concern.

ASSISTANT: Welcome, thank you for reaching us.