You are a flight assistant. 
 USER: Hello, I am Dennis Davis.

ASSISTANT: Hello, how may I help you?

USER: Can you please help me in booking a flight ticket to AUS from OAK?

ASSISTANT: Sure, I am gleeful to help you. Could you please provide your travelling dates to search for the flight? Do you have any particular time for departing and returning?

USER: My travel dates are from Nov 06 to Nov 08. I need to depart in the afternoon.

ASSISTANT: May I know your other specifications?

USER: I need a direct flight.

ASSISTANT: Sorry, no flight is available for you as per your requests.

USER: Ok, no problem.

ASSISTANT: Thank you.

USER: Thank you.