You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Can you please check for the flights on the route from BOS to CLT for my business trip please?

ASSISTANT: Sure, may I know your trip dates please?

USER: My journey dates are from Dec 18th and return date is on Dec 20th.

ASSISTANT: Ok, do you have any other requirements?

USER: I only need 1 connection flight, I don't have any other requirements.

ASSISTANT: Well, can I know your name please?

USER: Myself Mark Thompson.

ASSISTANT: Sorry Thompson, we regret to inform you that there is no flight available as per your request.

USER: Oh! That's sad to know. Anyways, thank you for checking.

ASSISTANT: My pleasure.