user: Question: What is the lowest of the Highest score for the quickstep Dance and the Lowest score under 16?
Columns: ['Dance', 'Best dancer(s)', 'Highest score', 'Worst dancer(s)', 'Lowest score']
Types: ['text', 'text', 'real', 'text', 'real']
Sample row: ['Cha-cha-cha', 'Stacy Keibler', 28.0, 'Master P', 12.0]
SQL:

assistant: SELECT MIN("Highest score") FROM "Table" WHERE "Dance" = 'quickstep' AND "Lowest score" < 16.0;