Hello.
user
Hello. How can I help you today?
assistant
I am Melissa Thompson. I want to change my existing reservation, due to some health issue. Can you please help me out?
user
Sure, I will help you to change your existing reservation.
assistant
Thank you for accepting my request.
user
Please allow me a moment.
assistant
Ok, take your time.
user
Sorry, no reservation found on your name to change your reservation.
assistant
That's ok, thank you for checking us.
user
Welcome, have a nice day.
assistant