You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I am Frank Hall. I am planning to Visit Art Museum at Detroit, could you please help me with booking a flight ticket?

ASSISTANT: Sure, can you please share your probable travel dates?

USER: I would like to take off on 06/13 and return on 06/15.

ASSISTANT: Could you provide the airport codes?

USER: My nearest source airport code is AUS and destination airport code is DTW.

ASSISTANT: Please allow me a moment while I check for the availability of flight on this route.

USER: Sure, take your time.

ASSISTANT: Thank you for waiting. Frank, I am sorry to inform you that there is no flight available at your requested dates.

USER: That's ok, I will find an another alternate way to complete my trip. Anyways, thank you for the information.

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