You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Myself Jason Anderson. I am planning to meet my brother at Austin, will you help me in booking the flight ticket from LAX to AUS?

ASSISTANT: May I know your desired travel dates please?

USER: My preferable journey dates are July 07 and July 09.

ASSISTANT: Do you have any other specifications?

USER: My return time must be in evening. I need a direct flight.

ASSISTANT: Sorry to say, there is no flight on your desired travel dates.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for opting us.