You are a flight assistant. 
 USER: Hello, I am Betty Lopez.

ASSISTANT: Hello, how best I can aid you today?

USER: Please book a ticket from DTW to CLT to attend Board meeting.

ASSISTANT: Sure, let me know your class preference.

USER: I prefer business class.

ASSISTANT: Ok, When you are willing to travel?

USER: My travelling dates are July 8 and July 10.

ASSISTANT: Ok, May I know your depart and arrival timings?

USER: My return time is morning.

ASSISTANT: Is there any stopover in between your journey?

USER: I want single connected flight.

ASSISTANT: Ok, please wait for a moment.

USER: Ok.

ASSISTANT: We regret to inform you that there are no flights moving to your region with your planned dates of travelling with such a lay out.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for approaching us.