This July 1888 new article describes two new accommodation trains (trains that stop at most/all stations along the line) on the New York, Lake Erie and Western Railroad between Olean and Dunkirk, NY. Both trains connect at Dayton, NY with trains running on the Buffalo and Southwestern division of the railroad.
Source: Jamestown [NY] Evening Journal, 14 July 1888, p. 1, NYS Historic Newspapers.