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 DTW to BOS?

ASSISTANT: Sure, I am happy to help you. May I know your travel dates?

USER: Sure, my travel dates are from Dec 25 to Dec 27.

ASSISTANT: Do you have any connection limit?

USER: I nee a connecting flight.

ASSISTANT: May I know your class preference?

USER: I prefer economy class.

ASSISTANT: Do you have any more specifications?

USER: No.

ASSISTANT: Let me know your name to proceed.

USER: Myself Dorothy Thomas.

ASSISTANT: Please, be on hold.

USER: Sure.

ASSISTANT: Delta airlines is providing you the connecting flight, which departs at 3 AM and arrives at 3 AM. Shall I proceed?

USER: Ok, please proceed.

ASSISTANT: Your ticket has been reserved with flight-1005.

USER: Thank you for your service.

ASSISTANT: Thank you for choosing us.