You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you?

USER: I need to book a ticket from DEN to AUS. Could you book a ticket?

ASSISTANT: Please provide your journey dates.

USER: Departure is by Nov, 5 and return date is Nov, 7.

ASSISTANT: Can I know your connection limit?

USER: I would prefer connecting flight.

ASSISTANT: Do you have any other specifications?

USER: I prefer to travel in business class.

ASSISTANT: May I know your name?

USER: My name is Scott Miller.

ASSISTANT: There are no flights available on your routes.

USER: Thank you.

ASSISTANT: Thank you for choosing us.