Hello.
Hello, how may I help you today?
I want to change my existing reservation due to some health issue. Can you help me?
Sure, I am here to help you.
Thank you.
May I know your name please?
Yes, I am Samuel Thompson.
Sorry to say, that there is no reservation found as per your name to change it.
Ok, not a problem. Thank you for your information.
You are welcome always.