Hello. Myself Dennis Hall.
Hello, how may I aid you today?
I want to change my existing reservation, can you help me?
Sure Dennis Hall, I am here to help you out. Please allow me a moment to check the reservation on your name.
Sure, I will wait for your response.
Sorry Dennis Hall, there is no reservation on your name in our database.
That's ok, thank you for the information.
Thank you for reaching us.