user: Question: How many times did an episode with a production code of 12003 was aired?
Columns: ['No. in series', 'No. in season', 'Title', 'Directed by', 'Written by', 'Original air date', 'Production code', 'U.S. viewers (millions)']
Types: ['real', 'real', 'text', 'text', 'text', 'text', 'real', 'text']
Sample row: [249.0, 1.0, '"Locum"', 'Arthur W. Forney', 'Dawn DeNoon', 'September22,2010', 12001.0, '9.68']
SQL:

assistant: SELECT COUNT("Original air date") FROM "Table" WHERE "Production code" = 12003.0;