Hi, my name is John Williams.
user
Hello John, how can I assist you?
assistant
I want to alter my existing reservation because my project work is not yet finished.
user
Sure, I am here to help you. Please wait, let me check your reservation status.
assistant
Sure, take your time.
user
Sorry, no reservation found under your name in our database.
assistant
It's ok, no problem. Thank you for your information.
user
You are most welcome.
assistant