You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you out?

USER: Angela Lewis here. I want to travel from Detroit to Minneapolis for attending a seminar. Can you please help me for booking the flight ticket?

ASSISTANT: Sure, I will help you out.

USER: Ok.

ASSISTANT: May I know your travelling dates please?

USER: My departure date is 12/25 and return date is 12/27.

ASSISTANT: Can I know your airport codes too?

USER: My airport codes are from DTW to MSP.

ASSISTANT: Ok, please wait for a while.

USER: Ok, I will wait. Make sure my connections limit is 1.

ASSISTANT: Sorry, there are no flights found.

USER: Anyway, thanks for the information.

ASSISTANT: Thank you for choosing us.