user: Question: What is the season number of the show written by both Kari Lizer and Jeff Astrof?
Columns: ['Series #', 'Season #', 'Title', 'Written by', 'Original air date', 'U.S. Viewers (millions)']
Types: ['real', 'real', 'text', 'text', 'text', 'text']
Sample row: [36.0, 1.0, '"The Big Bang"', 'Kari Lizer & Jeff Astrof', 'February4,2008', '9.43']
SQL:

assistant: SELECT "Season #" FROM "Table" WHERE "Written by" = 'Kari Lizer';