user: Question: How many million u.s. viewers watched the episode with a production code of 2T7004?
Columns: ['Series #', 'Title', 'Written by', 'Directed by', 'Original air date', 'Production code', 'U.S. viewers (millions)']
Types: ['real', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: [1.0, '"Pilot"', 'Jonathan Shapiro', 'Andrew Davis', 'September19,2005', '475279', '3.440']
SQL:

assistant: SELECT "U.S. viewers (millions)" FROM "Table" WHERE "Production code" = '2T7004';