You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Kathleen Clark.

ASSISTANT: Is there any help that you are expecting from my side?

USER: I need to travel Phoenix, can you please reserve flight ticket from AUS and PHX?

ASSISTANT:  Sure, I can help you and can you please mention your departure and arrival dates of your journey?

USER: My travelling dates are Feb 18 and 20.

ASSISTANT: Sure, is there any another specifications on your trip, so that I can book a ticket as per your wish?

USER: I need a flight with single connection and the preference is business class flight.

ASSISTANT: Ok, please wait for a moment.

USER: Please take your time.

ASSISTANT: Sorry, there is no flight found with your requirement.

USER: That's ok, thank you for searching flights.

ASSISTANT: Welcome.