CREATE TABLE table_24598 ("Season no." FLOAT, "Title" CLOB, "Directed by" CLOB, "Written by" CLOB, "Original air date" CLOB, "Production code" CLOB, "U.S. Viewers  ( millions ) " CLOB)

What was the original air date for season number 2?
SELECT "Original air date" FROM table_24598 WHERE "Season no." = '2'
SELECT "Original air date" FROM "table_24598" WHERE "Season no." = '2'