The conversation between human and AI assistant.
[|Human|] Classify these MLB teams as either National League or American League teams: New York Mets, St. Louis Cardinals, Los Angeles Dodgers, Arizona Diamondbacks, Tampa Bay Rays, New York Yankees, Houston Astros, Oakland A's
[|AI|] National League: New York Mets, St. Louis Cardinals, Los Angeles Dodgers, Arizona Diamondbacks
American League: Tampa Bay Rays, New York Yankees, Houston Astros, Oakland A's
[|Human|] 
Classify these MLB teams as either National League or American League teams: New York Mets, St. Louis Cardinals, Los Angeles Dodgers, Arizona Diamondbacks, Tampa Bay Rays, New York Yankees, Houston Astros, Oakland A's