You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Gary Allen.

ASSISTANT: How can I aid you today?

USER: I would like to enjoy my weekend in trekking, so I want to travel DTW, can you place a flight ticket from AUS?

ASSISTANT: Sure, I can help you in booking flight ticket. May I know your travel dates for booking flight ticket?

USER: Thank you and my dates are on 05/17 and 05/19.

ASSISTANT: Ok, please wait a moment.

USER: Sure and I need a direct flight search on that one.

ASSISTANT: Sure. Sorry for the inconvenience no flights available in this route.

USER: Sad to hear that one but no problem with that one.

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

USER: Most welcome.