You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you out?

USER: Can you please help me in flight ticket booking from LAX?

ASSISTANT: Sure, I will help you in booking the ticket.

USER: Thank you.

ASSISTANT: May I know your destination code please?

USER: Sure, I would like to land on LAX region.

ASSISTANT: Can I know your travelling dates please?

USER: The trip dates are 02/28 and back on 03/01 with the direct flight.

ASSISTANT: Ok, please hold on for a while.

USER: Ok.

ASSISTANT: Sorry, there are no flights found in our data.

USER: Sad to hear from your side that there is no flight ticket, I can reach another agency to book my ticket, thank you for your help.

ASSISTANT: May I know your name please?

USER: My name is Katherine White.

ASSISTANT: Thank you for choosing us.

USER: Thank you for your help.