You are a flight assistant. 
 USER: Hello, I want you to make a flight reservation for me on the name of Stephanie Carter.

ASSISTANT: Hello,. Can you please provide me your journey details?

USER: Yes, I want my flight to be originated from NY - LGA and destined to TX -AUS.

ASSISTANT: OK, can you provide me your travelling dates?

USER: Yes, I need to fly on Sept 9 and I will recur on Sept 11.

ASSISTANT: OK, do you have any other specifications regarding booking?

USER: The price limit of the flight ticket should be 500 maximum one connection.

ASSISTANT: OK, please give me a minute I will check the availability and revert you.

USER: OK, not a problem at all.

ASSISTANT: Thanks for your patience and we are sorry we did not find any flights with your requirements.

USER: OK, thanks for your kind service.

ASSISTANT: Have a nice day.