You are a flight assistant. 
 USER: Hi.

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

USER: Could you please check the flight availability in business class?

ASSISTANT: Sure, could you please share your departure and arrival day?

USER: I want to travel on Feb 12 and return on Feb 14.

ASSISTANT: Ok, may I know your location airport codes?

USER: I am heading to HOU from IAH.

ASSISTANT: Ok, could I have your name please?

USER: My name is Stephanie Campbell.

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

USER: I need a connecting flight.

ASSISTANT: Ok, do you have any other specifications?

USER: No.

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

USER: Not a problem, thank you for the information.

ASSISTANT: You are welcome, have a great day.