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