You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Nancy Miller here.

ASSISTANT: How may I aid you?

USER: I want to attend a Seminar in Minneapolis. Can you please help me for booking the flight ticket?

ASSISTANT: Sure, I am here to help you out. May I know your airport codes please?

USER: My airport codes are from DTW to MSP.

ASSISTANT: May I know your travelling dates please?

USER: My travelling dates are from 12/08 to 12/10. Make sure my connections limit is 0.

ASSISTANT: Wait a moment please.

USER: Ok, I will wait.

ASSISTANT: Nancy Miller, there are no direct flights available in your route.

USER: Anyway, thanks for the information.

ASSISTANT: Thank you for reaching us.