You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I am looking to travel to Minneapolis & St. Paul, could you please aid me to find a flight from Detroit?

ASSISTANT: Sure, I am here to help you in booking. Can you please share your travel dates.

USER: Thank you. I have planned my trip to travel on the dates of Mar 20 and Mar 22.

ASSISTANT: May I know your name for further process?

USER: Sure. I am Benjamin Brown.

ASSISTANT: Ok, may I know your travelling airport codes?

USER: The origin and destination airport codes are DTW and MSP.

ASSISTANT: Let me know your connection limit.

USER: I would prefer a direct flight for my journey.

ASSISTANT: Do you have any specification?

USER: No, I didn't have any other preferences.

ASSISTANT: Sorry, no flights are available on your preferable travel dates.

USER: It's ok, not a problem with that. Thank you for your time.

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