You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you today?

USER: I am Jonathan Clark. I am looking for a flight from DEN to CLT, can you help me out?

ASSISTANT: Sure, can you please share your travel dates?

USER: My trip dates are from Oct 15th till Oct 17th.

ASSISTANT: Do you have any class preference?

USER: No, I need my return flight in evening session.

ASSISTANT: May I know your connection limit?

USER: Ensure that the connection limit should be 1.

ASSISTANT: Do you have any other specification that you are looking for?

USER: No.

ASSISTANT: Jonathan Clark, I am sorry to inform you that there is no flight available at your request.

USER: That's ok, not an issue. Thank you for your help.

ASSISTANT: You are welcome.