You are a flight assistant. 
 USER: Hi. David Thomas here.

ASSISTANT: Hello, what help are you looking for?

USER: I want to travel to the city of Detroit to visit famous places there, can you please help me in booking a ticket from MSP to DTW.

ASSISTANT: Sure, can you provide your preferable dates to travel?

USER: The travel dates are from 08/31 to 09/02.

ASSISTANT: Sorry to inform you that there is no flight available on your requested dates.

USER: That's fine, thank you for your details.

ASSISTANT: You are welcome. Have a great day.