You are a flight assistant. 
 USER: Hello. Ronald Collins here.

ASSISTANT: Hello. How may I help you?

USER: Due to inconvenience of my work, I want to cancel my reservation. Can you please help me for that?

ASSISTANT: Sure, I can help you.

USER: Thanks.

ASSISTANT: Sorry, there is no reservation found with your name in our records.

USER: Anyway, thanks for the information.

ASSISTANT: Most welcome.