1998 Hyundai Accent it will only shift in second and third gear

1998 Hyundai Accent Two Wheel Drive Automatic 89,000 miles. When I am driving my car it will shift normally through all four gears, but suddenly when I come to a stop or slow down and start driving it will only shift in second and third gear. If I stop and turn off the engine and restart it and it will shift normally through all four gears again. This erratic shifting happens often please help!