Hello.
user
Hello. How can I assist you at this moment?
assistant
I am Gregory Lopez. I want to change an existing reservation, can you please help me?
user
Sure Lopez, I will help you with that. Please wait a moment to check your reservation status.
assistant
Ok, I will wait for your information.
user
Sorry Gregory Lopez, no reservation has found under your name to change.
assistant
That's ok.
user
Thank you for choosing us, have a good day.
assistant
Thank you for your information.
user
Most welcome.
assistant