user: Question: What was the ranking of the season finale aired on May 8, 2006? 
Columns: ['Season', 'Network', 'Season premiere', 'Season finale', 'TV season', 'Ranking', 'Viewers (in millions)']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['1st', 'UPN', 'September 11, 2000', 'May 14, 2001', '2000–2001', '#136', '4.0']
SQL:

assistant: SELECT "Ranking" FROM "Table" WHERE "Season finale" = 'May 8, 2006';