You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you for the day?

USER: I have planned to book a plane ticket from MSP to DTW, can you assist me?

ASSISTANT: Sure, I will help you with that. May I know your planned travel dates?

USER: My preferred dates are Dec 27th and Dec 29th.

ASSISTANT: Do you have any class preference?

USER: I am Ok with any class.

ASSISTANT: Can I know your connection limit?

USER: I need single connection between my trip.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: May I know your name please?

USER: Mark Moore.

ASSISTANT: Sorry to say that, there are no flights found on this route as per your travel dates.

USER: No problem, thank you for searching.

ASSISTANT: Thank you for reaching us, have a great day.