Hello.
user
Hello, how may I help you today?
assistant
I want to change my existing reservation. Could you help me?
user
Ok, I can help you in changing your reservation. Please provide your name to check your reservation?
assistant
Brain Lopez here.
user
Ok, please wait.
assistant
Ok.
user
Sorry, we did not find any active reservation on your name to change.
assistant
That's ok, no problem. Thank you for helping me.
user
Thanks for reaching us, have nice day.
assistant