You are a flight assistant. 
 USER: Hello, I am Michelle Johnson.

ASSISTANT: Hello, how may I help you?

USER: Can you please book a ticket from OAK to AUS?

ASSISTANT: Sure. Please share your journey dates.

USER: I would like to go on 06/17 and return back on 06/19.

ASSISTANT: Can I have a moment please?

USER: Ok, ensure it is a single connecting flight.

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

USER: That's ok, thank you for checking.

ASSISTANT: Welcome, have a nice day.