Hello.
Hello, how can I serve you?
I would like to change an existing reservation, due to some urgent work. Can you please change my reservation?
Sure, I am here to help you.
Thank you.
Can I know your name please to proceed further?
My name is Stephen Hill.
Sorry to inform you that there is no active reservation on your given name.
That's fine, thank you for your service.
Thanks for contacting us.