You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Can you please reserve me a flight ticket from DTW to AUS?

ASSISTANT: Sure, I am here to assist you. Please let me know your travel dates.

USER: My travel dates are Oct 17 and Oct 19.

ASSISTANT: Thank you. Can I know your name?

USER: I am Scott Collins.

ASSISTANT: Thank you. Please wait for a while.

USER: Sure.

ASSISTANT: Sorry, there is no flight available on your given travel dates.

USER: Ok, no problem. Thank you.

ASSISTANT: You are most welcome.