Hello.
user
Hello. How can I help you today?
assistant
I want to change my reservation, can you help me in doing that?
user
Sure, I am here to help you with that, can I know your good name to proceed further?
assistant
I am Patricia Smith.
user
 I am very sorry to inform you that there is no reservation found under your name in our database.
assistant
Ok, no issues. Thank you for checking.
user
Thank you for reaching us.
assistant