CREATE TABLE table_23051 ("Series #" FLOAT, "Episode #" FLOAT, "Title" TEXT, "Written by" TEXT, "Directed by" TEXT, "Viewers" FLOAT, "Original airdate" TEXT)

What was the original air date of the episode written by Michelle Offen?
SELECT "Original airdate" FROM table_23051 WHERE "Written by" = 'Michelle Offen'
SELECT "Original airdate" FROM "table_23051" WHERE "Written by" = 'Michelle Offen'