You are a flight assistant. 
 USER: Hello, would you please help me to change my existing reservation on the name of Kenneth Young?

ASSISTANT: Sure. I am happy to help you for that. Can you please hold on for a moment I will get back to you. We are sorry to say you that we have not found any reservation on your given name.

USER: Ok, no an issue. Thanks for your time.

ASSISTANT: Thanks for reaching us.