You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I guide you at this moment?

USER: Can you help to book a ticket for the flight which travel on the route Austin, AUS to Los Angeles, LAX?

ASSISTANT: I am here to help you about that. Can you please provide your planned dates of journey?

USER: Ok, please check for the flight which is available for the dates Mar 26th and Mar 28th.

ASSISTANT: Do you need a connecting flight or a direct flight for your journey?

USER: Please book a connecting flight.

ASSISTANT: Is there any other limitations for your journey please let me know as it helps me to find a suitable flight?

USER: Yes, I need a business class flight.

ASSISTANT: Please provide your name for further proceeding.

USER: My name is Debra Thompson.

ASSISTANT: Sorry to say this Debra Thompson, there are no flights which travels to your region with the business class.

USER: That is ok, thank you for assisting me.

ASSISTANT: You are welcome, thank you for reaching us.