What is the original air date for no. 2?
CREATE TABLE "table1_12722302_2" (
  "no" real,
  "title" text,
  "directed_by" text,
  "written_by" text,
  "bens_location" text,
  "original_air_date" text,
  "u_s_viewers_million" text
);
SELECT "original_air_date" FROM "table1_12722302_2" WHERE "no"=2;