Hello, I am Linda Allen.
Hello, how may I be at your service today?
Due to my health problem I want to change my reservation, can you please help me to change my reservation?
Sure, we are here to help you.
Thank you.
Please wait for a while, I will check the reservation list and get back to you.
Ok.
Thank you for your time, we did not find any reservation with your name.
Ok, no problem.
Thank you for choosing our service.