Hi.
Hello, how can I provide assistance for you?
 I want to do some modifications in my previous reservation, due to some health issue. Can you please help me out?
Sure, I am gleeful to help you. Could you please provide your name to check your current reservation status?
My name is Barbara Walker, please check my reservation details in your records.
Ok, please hold on for a moment I will check your complete reservation details and proceed further to change your existing reservation.
Sure, I will wait for your response.
Sorry to say this, there is no active reservation on your name in my database.
Ok, no issues with that.
Thank you for contacting us, have a pleasant day.