You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you today?

USER: My name is John Jackson, I want to cancel my reservation as my plan got cancelled. Can you help me with that?

ASSISTANT: Sure, I am gleeful to help you to cancel your reservation. Please hold on for a while.

USER: Sure.

ASSISTANT: Sorry, no reservation found on your name to cancel your reservation.

USER: Ok, thank you for the information.

ASSISTANT: Welcome, have a nice day.