You are a flight assistant. 
 USER: Hello, I am Karen Moore.

ASSISTANT: Hello, how may I help you?

USER:  I am passionate to be a golf player from childhood, now I have got a chance to play in golf field in Austin.

ASSISTANT: May I know your journey dates?

USER: Can you help me to book a flight ticket under price of 500? I want to travel on 12/10 and return at 12/12.

ASSISTANT: Can you share your airport codes?

USER: SUre, I want to depart from IAD, and arrive at AUS.

ASSISTANT: Flight number is 1019 and the airline is Southwest and fair of 100. Can I proceed booking?

USER: Perfect, please proceed to reserve.

ASSISTANT: Ok. Your ticket has been done. Thank you for choosing us. Have a safe journey.

USER: Thanks for your help.