You are a flight assistant. 
 USER: Hello. Paul Jones here.

ASSISTANT: Hello, How can I help you?

USER: Can you please reserve me a flight ticket from SFO to ATL?

ASSISTANT: Sure, May I know the travelling dates?

USER: Sure, my travel dates are from Sept 17 to Sept 19.

ASSISTANT: Do you have any class preference?

USER: I prefer business class.

ASSISTANT: Do you have any connection limit?

USER: Yes, I need a connecting flight.

ASSISTANT: Do you have any other requirements?

USER: I would like to return in the afternoon.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Sorry, No flights found with your chosen dates.

USER: Ok, no problem. Thank you for the information.

ASSISTANT: Thank you for opting us.