You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Can you please help me in booking a flight ticket from ORD to DTW to attend a film festival?

ASSISTANT: May I know the travel dates please?

USER: My planned journey dates are Dec 16 and Dec 18.

ASSISTANT: Is there any airline preference?

USER: No.

ASSISTANT: May I know is there any connection limit?

USER: I prefer a flight having maximum connection of one.

ASSISTANT: Are there any more preferences that you want to avail?

USER: I need a business class ticket.

ASSISTANT: May I know your name please?

USER: I am Sharon Thomas.

ASSISTANT: Sharon Thomas. I regret to inform that there are no flights on your route with the given dates.

USER: Ok, no problem. Thank you for the information.

ASSISTANT: Thank you for reaching us.