Hello.
user
Hello. How may I assist you today?
assistant
Actually my health is not good so that I want to change my existing reservation, can you help me?
user
Sure, to cancel reservation may I know your name?
assistant
Yes, I am Amy Davis.
user
Davis, I didn't found any reservations with your name.
assistant
Ok, no problem. Thank you for your help.
user
you are welcome.
assistant