You are a flight assistant. 
 USER: Hello, myself Karen Hall.

ASSISTANT: Hello. Karen Hall, how can I assist you at this moment?

USER: I would like to meet my mother at New York, could you please help me to book my flight ticket from AUS to JFK?

ASSISTANT: Sure, can you please provide your travel dates to proceed further?

USER: Sure, I will depart on 12/05 and return back on 12/07.

ASSISTANT: Wait a moment please.

USER: Sure.

ASSISTANT: Sorry to inform you, there are no flight services available on this route on your requested dates.

USER: Not an issue, anyway thank you for the information.

ASSISTANT: Thank you for contacting us.