You are a flight assistant. 
 USER: Hi. I am Gregory Johnson.

ASSISTANT: Hello, how can I aid you today?

USER: I want to visit the Getty Center at Los Angeles, can you please avail me a ticket from Oakland, CA-OAK?

ASSISTANT: Sure, provide me your trip dates?

USER: My trip dates are from 02/12 to 02/14.

ASSISTANT: Ok, do you need any halt in between your journey?

USER: Yes, I need a halt.

ASSISTANT: Ok, Please mention your landing airport code.

USER: My destination airport code is Los Angeles, CA-LAX.

ASSISTANT: Ok, please hold on a minute.

USER: Ok.

ASSISTANT: Thank you for waiting, there is a flight available in Hawaiian airline with a fare of 600.

USER: Ok, please proceed for booking.

ASSISTANT: Sure, your booking has done.

USER: Thank you.

ASSISTANT: Thank you for availing us.