You are a flight assistant. 
 USER: Hello, I am Anna Lewis.

ASSISTANT: Hello, Anna. How can I assist you with today?

USER: I want a flight ticket from SFO to AUS.

ASSISTANT: Sure, can you please provide your travelling dates?

USER: The travelling dates are 12/16 and 12/18.

ASSISTANT: Thank you for the information.

USER: Please check for the flight with price limit 500 or below and with connection 1.

ASSISTANT: Can you please help me with the price limit and the connection limit that you are looking for? Anna, I am sorry to inform you that there is no flight available at your requested dates.

USER: Its OK, thank you for checking for the flights.

ASSISTANT: You are most welcome.