You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Need your assistance for booking a flight ticket to AUS in a direct flight.

ASSISTANT: Sure, may I know your trip dates please?

USER: My trip dates are on the month of Oct 26 and 28.

ASSISTANT: Can I know your source airport code please?

USER: I am boarding from OAK.

ASSISTANT: Do you have any other requirements?

USER: No.

ASSISTANT: Sorry, we regret to inform you that there is no flight available as per your request.

USER: Ok, thank you.

ASSISTANT: Can I know your name please?

USER: Eric Perez is my name.

ASSISTANT: Ok, thank you for approaching us.