You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Joseph Miller here, can you please help me in booking the ticket from AUS to LAX? As I'm planning to visit Los Angeles.

ASSISTANT: May I know your desired travel dates please?

USER: Yes, my planned travel dates are 05/21 and 05/23.

ASSISTANT: Please wait a while. There is a flight with connection limit 1 and fare 100, shall I proceed for booking?

USER: Please search for a direct flight.

ASSISTANT: Sorry to say, there is no flight on your desired travel dates. Thank you for opting us.