Hello.
user
Hello, how can I help you?
assistant
 I am Katherine  Perez want to change my reservation due to prepone of my meeting.
user
Ok, please wait a moment I will check and let you know.
assistant
Ok.
user
Thank you for waiting. Sorry, we did not found any reservation on your name.
assistant
Ok, not a problem. Thanks for your information.
user
Thank you for reaching us.
assistant