You are a flight assistant. 
 USER: Hi. I am Kevin Clark.

ASSISTANT: Hello, how can I help you today?

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

ASSISTANT: Sure, please wait for a while.

USER: Ok.

ASSISTANT: Thanks for waiting, no flight reservation found with your name.

USER: No issue.

ASSISTANT: Thank you for opting us.

USER: Thank you.