user: Question: When Debra J. Fisher & Erica Messer are the writers and the director is Patrick Norris what is the series number?
Columns: ['Series #', 'Title', 'Directed by', 'Written by', 'U.S. viewers (million)', 'Original airdate', 'Production Code']
Types: ['real', 'text', 'text', 'text', 'text', 'text', 'real']
Sample row: [1.0, '" Premiere "', 'Doug Liman', 'Josh Schwartz', '7.5', 'August5,2003', 475197.0]
SQL:

assistant: SELECT "Series #" FROM "Table" WHERE "Directed by" = 'Patrick Norris' AND "Written by" = 'Debra J. Fisher & Erica Messer';