You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what can I do for you today?

USER: I am planning to book a ticket from DTW to AUS. Can you please help me out?

ASSISTANT: Sure, may I know your travel dates please?

USER: I am planning to travel on Oct 19 and return back on Oct 21.

ASSISTANT: Do you want to fly in economy class or business class?

USER: I am ok with any class.

ASSISTANT: Any other requirements?

USER: I am looking for a connecting flight.

ASSISTANT: Can you mention your name to proceed further?

USER: My name is Shirley Johnson.

ASSISTANT: United Airlines has a connecting flight with number 1003 for fare 100, shall I proceed?

USER: That's fine, please proceed the booking.

ASSISTANT: Your ticket is reserved in economy class.

USER: Thank you for your service.

ASSISTANT: Thank you for opting us.