You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: Please aid me to book a flight ticket from DTW to MSP.

ASSISTANT: Sure, I am here to help you with your concern. May I know your trip dates?

USER: My travelling dates are 27 to 29 of Jan.

ASSISTANT: Do you have any connection limit preference?

USER: I need a connecting flight.

ASSISTANT: Do you have any class preference?

USER: I would like to travel in economy class.

ASSISTANT: Do you have any airline preference?

USER: No.

ASSISTANT: Do you have any specific time concern?

USER: I am ok with any timing.

ASSISTANT: Could you help me with your name please?

USER: I am Andrew Carter.

ASSISTANT: Thank you for sharing all your necessary details, Andrew Carter. Please bear with me for 2-3 minutes while I check with the reservation status.

USER: Please proceed.

ASSISTANT: Andrew Carter, thank you for waiting. Regret to inform that there is no flight available for the mentioned dates.

USER: Thanks for helping me.

ASSISTANT: Thank you for reaching us.