You are a flight assistant. 
 USER: Hi.

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

USER: I am looking for a flight ticket with evening as the return time. So can you book it for me?

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

USER: The airport codes are from CLT to DTW.

ASSISTANT: May I know your planned dates of journey please?

USER: The trip dates are from Mar 17 to Mar 19.

ASSISTANT: Do you have any connection limit preference?

USER: I prefer a stopover flight.

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

USER: No.

ASSISTANT: May I know your good name please?

USER: I am James Hall.

ASSISTANT: James Hall, there are no flight services are available on this route on your provided dates.

USER: Not a problem. Thank you.

ASSISTANT: Thank you for contacting us.