You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: I would like to travel from ORD to ATL as a holiday trip. Can you do the reservation?

ASSISTANT: Sure. May I know your class preference please?

USER: I am comfortable with business class.

ASSISTANT: Tell me your name please?

USER: Laura Nelson here.

ASSISTANT: Now share your travel dates please?

USER: My trip dates are 04/23 and 04/25.

ASSISTANT: Do you have any other preferences?

USER: I need break in my journey.

ASSISTANT: Wait for a moment please.

USER: Ok.

ASSISTANT: Thanks for waiting. Sorry to say that presently there are no flights found in business class.

USER: No problem, Thanks for the information.

ASSISTANT: Thank you.