Hello.
user
Hello, how can I help you today?
assistant
I want to change my existing reservation because of some personal work, can you please help me out?
user
Sure, I will help you in changing your reservation. Can I know your name please for checking your reservation status in our website?
assistant
Thank you, my existing reservation is on the name of Catherine Perez.
user
Ok, please wait for a moment. I will check and get back to you.
assistant
Sure.
user
Perez, I have not found any reservation under your name.
assistant
Ok, no problem. Thank you for your information.
user
Thank you for contacting us and have a nice day.
assistant