You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you at this moment?

USER: Can you please help me with flight ticket booking from ATL to DEN?

ASSISTANT: Sure, I am here to help you. Can you please provide your journey dates?

USER: Thank you. I have planned my travel dates as Nov 07 and Nov 09.

ASSISTANT: Do you have any connection limit preference?

USER: I am looking for direct flight so please check with that.

ASSISTANT: Do you have any other specifications for this trip?

USER: No, I do not have any other specifications.

ASSISTANT: May I know your good name please?

USER: Sure, myself Jerry Campbell.

ASSISTANT: Jerry Campbell, we regret to inform you that there are no flight services are available on this route on your provided dates.

USER: Oh! It is sad to hear. Anyway, thank you for your time.

ASSISTANT: Thank you for contacting us.

USER: Most welcome.