An elevator trip based on destinations and activity parameters of a user is planned by a system having an elevator controller of an elevator installation, a storage device storing building plan data and a route planning computer. The user's trip inquiry, including a desired destination and a desired activity parameter, is received by the planning computer. Building plan data is read from the storage device by the planning computer. The current location of the user is determined by the planning computer, which calculates at least one route proposal based on the user's location, the destination and the activity parameter. The route proposal is communicated to the user. Upon receipt of a confirmation that the user selected the route proposal, a control signal identifying a boarding floor and a destination floor is transmitted by the planning computer to the elevator controller. The elevator installation is controlled according to the control signal.