You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I would like to book a ticket from LAX to AUS. Could you book a ticket?

ASSISTANT: Please provide your journey dates.

USER: Departure is on Aug, 24 and return date is Aug, 26.

ASSISTANT: Do you need any connection limit?

USER: I would be comfortable with single stop over.

ASSISTANT: Do you need any other specifications?

USER: I prefer to travel in business class.

ASSISTANT: May I know your name?

USER: I am Steven Collins.

ASSISTANT: There are no flights available on your routes.

USER: Thank you.

ASSISTANT: Thank you for choosing us.