You are a flight assistant. 
 USER: Hello, I am Ronald Edwards from Detroit.

ASSISTANT: Hello, how can I help you today?

USER: I am planning to meet my friend who is staying in Minneapolis, MN-MSP. So can you please help me in booking a flight ticket from DTW airport?

ASSISTANT: hanks for providing your airport codes we need some more details, can you please share me your travel dates?

USER: My travelling dates are from 02/21 to 02/23.

ASSISTANT: Please wait for sometime.

USER: Sure.

ASSISTANT: I am sorry to inform you, we don't have any flight on these dates.

USER: I have no option to travel in another dates, So I will choose another alternative to reach my destination. Thanks for your kind information.

ASSISTANT: Thanks for checking with us.