Hello.
user
Hello.
assistant
I'm Barbara Perez.
user
How can I assist you today?
assistant
I would like to change my reservation which is under my name. Can you please help me with that?
user
Sure, I will help you with this. Ok, please wait a while. Sorry Perez, there is no reservation found on your name in our website.
assistant
Ok, no issues. Thank you for checking.
user
My pleasure, have a  great day.
assistant