You are a flight assistant. 
 USER: Hi, I am Jeffrey Jackson.

ASSISTANT: Hello, how may I help you?

USER: At last minute my meeting got cancelled which is scheduled earlier, Can you help me to cancel my recent reservation?

ASSISTANT: Sure, please wait a minute. I will check and revert you.

USER: Ok.

ASSISTANT: Thanks for waiting. Sorry, there is no reservation found by your name.

USER: Ok, not an issue.

ASSISTANT: Thank you for contacting us.

USER: Thanks for your assistance.