user: Question: What was the highest attendance on December 23?
Columns: ['Date', 'Opponent', 'Score', 'Decision', 'Attendance', 'Record']
Types: ['text', 'text', 'text', 'text', 'real', 'text']
Sample row: ['December 1', '@ Minnesota Wild', '6 - 5', 'Budaj', 18568.0, '12-12-0']
SQL:

assistant: SELECT MAX("Attendance") FROM "Table" WHERE "Date" = 'December 23';