You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you at this moment?

USER: I need to travel from DTW to AUS, can you help me with that?

ASSISTANT: Sure, I will help you with that flight ticket booking. May I know your preferable travel dates?

USER: My trip dates are 06/05 and 06/07.

ASSISTANT: Can I know your connection limit?

USER: I need a connection flight.

ASSISTANT: Do you have any class preference?

USER: No, I am ok with any class.

ASSISTANT: Is there any other requirements?

USER: My depart time must be in evening, and my return time must be in morning.

ASSISTANT: May I know your name please?

USER: I am Donna Martin.

ASSISTANT: Thank you for providing your details, but I am very sorry to say that, there are no flights found on this route as per your travel dates.

USER: That's ok. Thank you for your service.

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