Hello. I am Cynthia Thompson.
user
Hello Cynthia, how can I help you today?
assistant
I want to change my existing reservation, due to some health issue. Can you please help me out?
user
Sure, I am here to help you with that.
assistant
Thank you.
user
Please hold on for a while.
assistant
Ok, take your time.
user
Sorry  Cynthia Thompson, no reservation has found under your name to change.
assistant
That's ok, no problem. Anyway thank you for checking.
user
Thank you for choosing us, have a good day.
assistant
Welcome.
user