Hello.
user
Hello, how can I help you today?
assistant
I want to change my existing reservation, can you please help me with this?
user
Sure, may I know your good name?
assistant
I am Richard Evans.
user
Please wait for a moment.
assistant
Sure.
user
Sorry to say that, no reservation was found with your good name.
assistant
Ok, no problem. Thank you for your information.
user
Thank you for reaching us.
assistant