You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, do you need any help from us?

USER: Myself Carol Baker. Can you please help me in booking a flight ticket from OAK to AUS locations?

ASSISTANT: Sure, may I know your trip dates?

USER: My travelling dates are from 09/12 and 09/14. Make sure that I need a direct flight.

ASSISTANT: Sorry, there is no plane on your requested travelling dates.

USER: It's ok. Thank you for the information.

ASSISTANT: Thank you for opting us, have a great day.