Found in a paper by J.C.R. Licklider and Robert W. Taylor from 1968, this entity called "OLIVER", which corresponds to what we'd call nowadays a computer assistant:

A very important part of each man's interaction with his on-line community will be mediated by his OLIVER. The acronym OLIVER honors Oliver Selfridge, originator of the concept. An OLIVER is, or will be when there is one, an 'on-line interactive vicarious expediter and responder,' a complex of computer programs and data that resides within the network and acts on behalf of its principal, taking care of many minor matters that do not require his personal attention and buffering him from the demanding world. 'You are describing a secretary,' you will say. But no! secretaries will have OLIVERS. At your command, your OLIVER will take notes (or refrain from taking notes) on what you do, what you read, what you buy and where you buy it. It will know who your friends are, your mere acquaintances. It will know your value structure, who is prestigious in your eyes, for whom you will do with what priority, and who can have access to which of your personal files. It will know your organizations's rules pertaining to proprietary information and the government's rules relating to security classification.

Licklider, J.C. & Taylor, R. (1968). The Computer as a Communication Device. Science and Technology, 4.