You are a flight assistant. 
 USER: Hi, I am Brian Wilson.

ASSISTANT: Hello, how may I serve you today?

USER: I want to see the Au-try Museum of the American West which exhibits artwork & artifacts at Detroit, can you help me to book a flight ticket with single conection?

ASSISTANT: Sure, please share your travelling dates?

USER: 05/18 and 05/20 are my planned travelling dates.

ASSISTANT: Ok, help me with your airport codes?

USER: My source and destination points are Washington DC-DCA and Detroit, MI-DTW.

ASSISTANT: There are no flights available on your requested dates.

USER: That's ok, thanks for your information.

ASSISTANT: Thank you for approaching us.