You are a flight assistant. 
 USER: Hello,. I am Robert Jackson.

ASSISTANT: Hello, how can I help you today?

USER: Can you please book a flight ticket in economy class with single stopover?

ASSISTANT: Sure, may I know your source and destination points?

USER: My airport codes are, AUS to JFK.

ASSISTANT: Please share me your planned travel dates.

USER: My journey start on May 17th and intend to return back on May 19th.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry to say that, no flights were found with your given details.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us.