You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. In which way I can aid you at this moment?

USER: I am Nancy Johnson. Can you find a flight for me from AUS to JFK, to meet my parents who are living in New York.

ASSISTANT: Sure, I will aid you with that. Can you please mention your preferable travel dates?

USER: Ok, my trip dates are from Sept 18 to 20.

ASSISTANT: Is there any additional preferences do you have?

USER: Yes, I prefer to go in economy class.

ASSISTANT: Ok, please wait a moment.

USER: Sure, get back with good airlines.

ASSISTANT: Sorry no flights are available in this route as per your requested dates.

USER: It's ok, thanks for checking.

ASSISTANT: Thank you for contacting us.