You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: I am Kenneth Phillips. I already have an reservation to attend a meeting, due to some problems meeting place has been changed. So I need a few changes in my reservation,.

ASSISTANT: Sure, please wait.

USER: Ok.

ASSISTANT: Thanks for waiting. There is no reservation found with your name.

USER: Ok, no problem. Thank you.

ASSISTANT: Have a nice day.