You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I am Jeffrey Wilson. I need a flight from AUS to OAK, can you help me out in booking the flight ticket please?

ASSISTANT: Sure, I will here to oblique you. May I know your dates of journey please?

USER: My trip dates are from 07/14 till 07/16.

ASSISTANT: Sorry Wilson, there is no flight found as per your travelling details.

USER: That's ok, not an issue. Thank you for your help.

ASSISTANT: You are welcome and have a great day.