You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: I am planning to travel from ORD to AUS, can you please help me in flight booking?

ASSISTANT: Sure, let me know your planned travel dates?

USER: I want to fly on Dec 20, return on Dec 22.

ASSISTANT: Do you have any connection limit?

USER: I need a single connecting flight.

ASSISTANT: Is there any time concern?

USER: My depart time should be afternoon.

ASSISTANT: Can I know your name?

USER: My name is Michael Allen.

ASSISTANT: Is there any other specifications?

USER: I want business class flight ticket.

ASSISTANT: We found a connecting flight 1001 in Southwest airline with fare 600 and class is business with depart time is 18:00 Hours.

USER: Ok, proceed to booking.

ASSISTANT: Shall I proceed with booking?

USER: Yes, please.

ASSISTANT: Your flight ticket has been confirmed.

USER: Thank you.

ASSISTANT: Thank you for availing us.