Hello.
user
Hello. How may I assist you today?
assistant
I want to change my existing reservation. Could you help me with that?
user
Sure, May I know your name?
assistant
Gregory Green here.
user
Please wait a moment, let me check with your details.
assistant
Ok.
user
Sorry, there are no active reservations on your given name to change.
assistant
That's ok, no problem. Thank you.
user
Thank you for reaching our service.
assistant