You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, do you need any help from us?

USER: I am Michael Adams from Detroit. I want to attend for a meeting at  MSP. Can you please help me to book a flight from DTW?

ASSISTANT: Sure, could you please share your departure and arrival day?

USER: Sure, I want to travel on June 4 and intend to return on June 6.

ASSISTANT: Sorry, there is no flight on your requested travelling dates.

USER: Ok, no problem. Thank you for the information.

ASSISTANT: You are welcome, have a great day.