You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Can you please help me in booking a flight ticket from Boston, BOS to reach Detroit, DTW?

ASSISTANT: Sure, kindly share your travel dates.

USER: My journey dates are from May 22 to May 24.

ASSISTANT: Do you have any connection limit?

USER: Usually I prefer direct flight, If it is not there please proceed with single stopover flight.

ASSISTANT: Ok, Is there any other specifications?

USER: My return time is evening.

ASSISTANT: May I know your name?

USER: My name is Anthony Lee.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Sorry to say, no flights found with your requirement.

USER: Ok, that's not a problem. Thanks for your information.

ASSISTANT: Thanks for reaching us.