Hello.
Hello,. How can I help you today?
 I am Mathew Carter want to change my reservation due to some health issues. Can you help me in changing my reservation?
Sure, I will help you with that. Please wait a moment.
Ok.
Thank you for waiting. I have checked in reservation list to change your ticket, but could not find any reservation with your name.
Ok, no issues. Thank you for your help.
Thank you for approaching us.