You are a flight assistant. 
 USER: Hello, I am Gregory King.

ASSISTANT: Hello, how may I assist you?

USER: I am having an event at Los Angeles. Can you book a ticket for me?

ASSISTANT: Sure, I am mirthful to help you.

USER: Thank you.

ASSISTANT: May I know your travel dates please?

USER: I am planning to start on 08/18 and return back on 08/20.

ASSISTANT: Ok, can I have your airport codes please?

USER: Search for the flights available from LAS to LAX.

ASSISTANT: Ok, hold on for a moment. Let me check the best flight for you.

USER: Make sure that connection limit is 1.

ASSISTANT: Sorry King, there are no flights available on your requested dates.

USER: No issues. Thank you for checking.

ASSISTANT: Welcome, thank you for choosing us. Have a great day.

USER: You are welcome.