Simplify the following text for a Grade 15 native English-speaking person.
Original: Amtrak , America 's rail passenger carrier , announced that the southbound City of New Orleans passenger trains from Chicago , Illinois , from August 29 through September 3 , would terminate in Memphis , Tennessee , rather than their usual destination of New Orleans .
Simplified: Amtrak , America 's rail passenger carrier , announced that the southbound City of New Orleans passenger trains from Chicago , Illinois , from August 29 through September 3 , would stop at Memphis , Tennessee , rather than their usual destination of New Orleans .