Hello.
Hello. How can I help you?
I am William Martin. I want to change my reservation, due to some health issue. Can you please help me out?
Sure, I will help you to change your reservation.
Thank you.
Please give me a moment.
Sure, I will wait for your information.
Sorry, no reservation found on your name to change your reservation.
That' ok, thank you for checking.
Welcome, have a nice day.