You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Myself Raymond White, I have a business meeting at Vegas. Can you please help me in reserving the ticket from OAK to LAS?

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

USER: I am willing to drop-off May 01 and again I will retrieve on May 03.

ASSISTANT: Do you have any specifications?

USER: I prefer for direct flight.

ASSISTANT: Sorry, there is no direct flight available for you in this route.

USER: Not a big deal, anyway thank you very much for your kind service.

ASSISTANT: Thank you for reaching us.