You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I am planning to book a ticket form ATL to BOS. Can you please help me out to book a ticket?

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

USER: I am planning to travel on Dec 26 and return back on Dec 28.

ASSISTANT: Let me know your connection limit.

USER: I am looking for a connecting flight.

ASSISTANT: May I know your class preference?

USER: I am looking for a business class.

ASSISTANT: Do you have any other additional specifications?

USER: No.

ASSISTANT: Please, provide me your name to proceed.

USER: I am Jonathan Wright.

ASSISTANT: Sorry for the inconvenience, there are no flights running on that routes.

USER: That's fine, thank you for your service.

ASSISTANT: Thank you for reaching us.