You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you now?

USER: 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, please help me out with this.

ASSISTANT: Sure, I am here to help you. May I know your name to proceed?

USER: Thank you and my name is Laura White.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Sorry, there is no reservation found on your name.

USER: It's ok, thank you.

ASSISTANT: Thank you for opting us.