You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I am Janet Martinez. I want to book a ticket from CLT to DTW, can you please make a reservation?

ASSISTANT: Sure, may I know your travel dates?

USER: My travelling dates are on Sept 25 and Sept 27.

ASSISTANT: Do you have any airline preference?

USER: No.

ASSISTANT: May I know your connection limit?

USER: I need single connection. My depart time is evening, can you please make sure that?

ASSISTANT: In which class do you prefer to travel?

USER: I am okay with any class.

ASSISTANT: Ok, please be on hold. Let me check with the flight availability.

USER: Sure.

ASSISTANT: Sorry, there are no flights in this route as per your travelling details.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us.