A driver assistance system for an agricultural working machine, in particular a combine harvester has a large number of working mechanisms, an arithmetic logic unit, and at least one display unit, in which the arithmetic logic unit may process information generated by machine-internal sensor systems, external information, and information that is storable in the arithmetic logic unit, and in which the driver assistance system overcomes—with consideration for at least a selection of the available information—critical functions of the agricultural working machine in that efficiency parameters of the agricultural working machine are optimized via interactive, natural-language communication between the operator of the agricultural working machine and the driver assistance system.