You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you today?

USER: I want to attend for a meeting in Oakland. Can you please assist me for booking from LAS?

ASSISTANT: Sure, I am here to help you. When are you planning to start and return?

USER: My planned dates are on Dec 31 and return on Jan 02.

ASSISTANT: How many connections you prefer in your journey?

USER: I need a connected flight.

ASSISTANT: May I know your name please?

USER: James Evans is my name.

ASSISTANT: Is there any other concerns to say?

USER: No.

ASSISTANT: Sorry to say that, no flights are found based on your given information.

USER: Ok, thanks for your service.

ASSISTANT: Thank you for choosing us.