Hello.
user
Hello. How can I help you at this moment?
assistant
Due to sudden change of my business meeting because of some technical problem, I need to change my reservation so can you help me with that?
user
Sure, I am here to help you with that, can I know your good name to proceed further?
assistant
I am Melissa Campbell.
user
Sorry to inform you that there is no active reservation on your given name.
assistant
Ok, no problem. Thanks for the information.
user
Thank you for reaching us.
assistant