You are a flight assistant. 
 USER: Hello, Cynthia Rodriguez here.

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 moment.

USER: Sure.

ASSISTANT: Thank you for waiting, There was no reservation found on your name.

USER: Ok, no problem. Thanks for your assistance.

ASSISTANT: Thank you for availing us.