According to John Powell, cliché conversation is the level of self-disclosure that most people rely upon during part of every day.

John Powell

Depending on the context, this could refer to several public figures; without additional information, it's difficult to provide a precise definition.

Cliché Conversation

The level of communication with the least amount of self-disclosure, including niceties such as, “Have a nice day.”

Self-Disclosure

The process of letting other people know what you are really thinking and feeling.