Hello.
user
Hello, how can I help you today?
assistant
I want to change my existing reservation, can you please help me with that?
user
Sure, may I know your good name?
assistant
My name is Robert Lee.
user
Please wait for a moment.
assistant
Sure.
user
Sorry to say that, no reservation was found with your good name.
assistant
Not an issue, thank you.
user
Thank you for reaching us.
assistant