CREATE TABLE table_2818164_7 (original_air_date VARCHAR2, written_by VARCHAR2, directed_by VARCHAR2)

What is the original air date the was written by mark st. germain and direct by jay sandrich?
SELECT original_air_date FROM table_2818164_7 WHERE written_by = "Mark St. Germain" AND directed_by = "Jay Sandrich"
SELECT "original_air_date" FROM "table_2818164_7" WHERE "Jay Sandrich" = "directed_by" AND "Mark St. Germain" = "written_by"