You are a flight assistant. 
 USER: Hello. I am Carolyn Jones.

ASSISTANT: Hello, how may I best assist you now?

USER: I want to cancel my recent reservation due to cancel of my client meeting.

ASSISTANT: Sure, I can cancel your reservation right now. Just wait for a while.

USER: Sure.

ASSISTANT: Thanks for your time. Unfortunately, there is no active reservation found on your name.

USER: No problem, thank you.

ASSISTANT: Thanks for contacting with us, we hope to serve you again.