Hi.
user
Hello, how may I serve you at this moment?
assistant
I want to change my existing reservation, can you please help me with this?
user
Sure, may I know your name please?
assistant
I am Melisa Lopez.
user
Ok, please be on hold.
assistant
Sure.
user
Sorry to inform you that, we did not find any reservation on your name.
assistant
That's ok, thank you.
user
Thank you for choosing us.
assistant