Hello.
user
Hello, how may I help you?
assistant
I want to change my existing reservation, can you please help me with this?
user
Sure, may I know your name please?
assistant
Charles Miller here.
user
Ok, please wait.
assistant
Sure.
user
Sorry, there is no active reservation found with your name in our records.
assistant
No problem, thank you.
user
Most welcome.
assistant