Hello.
Hello.
I am Gregory Jackson.
Gregory Jackson, how can I assist you for the day?
I want to change my existing reservation, can you please help me with that?
Sure, I will help you with that  cancellation. Please hold for a moment, let me check your previous reservation status.
Sure, take your time.
Sorry to say that, there is no reservation found with your name in our database to cancel it.
Ok, no problem. Thank you for your time.
You are welcome, thank you for contacting us. Have a great day.