You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I need a direct flight for my journey to LAS from LAX to attend an event. Can you help me in booking a flight ticket?

ASSISTANT: Sure, I am gleeful to help you. Could you please provide your travelling dates to search for the flight?

USER: Thank you for considering my request. My travelling dates are Dec 30 and Jan 01.

ASSISTANT: May I know your name?

USER: Ok, my name is Charles Wilson.

ASSISTANT: Do you have any requirements?

USER: No.

ASSISTANT: Sorry to say, no flight is available for you.

USER: Not a problem, anyways thank you for the information.

ASSISTANT: Thank you for reaching us.