You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Will you help me in booking the flight ticket from AUS to LAS?

ASSISTANT: Sure,  may I know your planned journey dates?

USER: My travelling dates are Nov 21 and Nov 23.

ASSISTANT: Will you prefer a lay by in between your journey?

USER: I need a flight with single connection.

ASSISTANT: Let me know your airline preference.

USER: I always prefer normal-cost airlines.

ASSISTANT: Do you have any other requirements?

USER: I always prefer business class.

ASSISTANT: Your good name please?

USER: Myself Virginia Perez.

ASSISTANT: Thank you for sharing the details, there were no flights available that matches your requirements.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for approaching us.