Make gameobject rotate to point - Unity3d

We have a globe, that we rotate with an aeroplane that 'flies' over it to different destinations (marked as spheres on the globe surface) we need the aeroplane to be rotated to face it's current destination as if it's flying toward it. The camera and the aeroplane apart from this rotation we need do not move, only the globe moves. We need a script edited so that the plane always faces the destination it's 'flying towards'