You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: Can you please book a flight ticket from LAS to JFK?

ASSISTANT: Sure, I am here to help you out. May I know your travelling dates please?

USER: My trip dates are 03/22 and 03/24.

ASSISTANT: Can you please share your connection limit?

USER: I am comfortable to travel in a single connecting flight.

ASSISTANT: Do you have any other specification?

USER: I prefer a well known airline to travel. I prefer to travel with the comforts of business class.

ASSISTANT: May I know your name please?

USER: Anthony Thomas here.

ASSISTANT: Anthony Thomas, there are no flights available in your route with your preferences.

USER: That's ok, thank you for your information.

ASSISTANT: Thank you for your help.