You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Myself Ronald Nelson. I want to cancel my reservation which was done earlier, can you please help me in that?

ASSISTANT: Sure, just a moment please? I am sorry no reservation found on your name.

USER: Ok, no problem.

ASSISTANT: Thank you for choosing us.

USER: Thank you for the information.