You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what kind of service are you looking for?

USER: I would like to visit Houston to attend an event with my cousin, please help me in booking a ticket from AUS to IAH.

ASSISTANT: Sure, to find a flight I need travelling dates, can you please share it?

USER: Sure, my planned journey dates are on Jan 3 and Jan 5.

ASSISTANT: Is there any class preference do you have?

USER: Yes, I need a business class for my trip.

ASSISTANT: Sure, may I know your connection limit please?

USER: I need a connecting flight.

ASSISTANT: Do you have any other preference for this journey?

USER: No, thank you for asking.

ASSISTANT: Sorry to inform you that we don't have any business class seat available in your route.

USER: Ok, no issues. Thank you for your information.

ASSISTANT: May I know your name for documentation purpose please?

USER: My name is Rebecca Martin.

ASSISTANT: Thank you.