Original sentence: On the lower concourse of the building, a food court can be found.The northern platforms are usually used for Amtrak services to Milwaukee and the Metra Milwaukee District West, Milwaukee District North and North Central Service lines; the southern platforms are usually used for the rest of the services
Edited sentence: On the upper concourse of the building, a food court can be found.The northern platforms are used for Amtrak services to Milwaukee and Seattle and the Metra Milwaukee District West, Milwaukee District North and North Central Service lines; the southern platforms are used for the rest of the services