You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, do you need any help from us?

USER: Can you please help me to book a flight from AUS to LAX?

ASSISTANT: Sure, could you please share your trip dates?

USER: My trip dates are Oct 14 - Oct 16.

ASSISTANT: Ok, could I have your name please?

USER: I am Jonathan Hill.

ASSISTANT: Ok, do you need direct or connecting flight?

USER: I need a direct flight.

ASSISTANT: Ok, do you have any other specifications?

USER: I prefer an business class to travel.

ASSISTANT: Sorry, there is no flight on your requested travelling dates.

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

ASSISTANT: You are welcome, have a great day.