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