You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Can you please check the availability of flights in business class?

ASSISTANT: Ok. May I know your name please?

USER: Sure, my name is Katherine Scott.

ASSISTANT: May I know your source and destination codes please?

USER: My source and destination airport codes are MSP and DFW.

ASSISTANT: May I know your trip dates?

USER: My trip dates are on Feb 29 and return on March 02.

ASSISTANT: May I know your connecting preferences?

USER: I need a connected flight.

ASSISTANT: Is there any other preferences for you?

USER: No.

ASSISTANT: No flights found as per your preferences at the moment.

USER: Ok, thanks for your service.

ASSISTANT: Thank you.