You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: Help me in booking a flight from MSP to DTW?

ASSISTANT: Sure, I am happy to help you. Can you please let me know your travelling dates?

USER: My travelling dates are Dec 20 to 22.

ASSISTANT: Do you prefer any lay by in between journey?

USER: I prefer connection flight.

ASSISTANT: Are there any other specifications for you?

USER: I want to return back in Afternoon.

ASSISTANT: May I know your good name?

USER: I am Lisa Davis.

ASSISTANT: Sorry, no flights are available on your journey routes.

USER: That's ok, thank you.

ASSISTANT: Thank you for choosing us.