When did the callbacks from  rancho bernardo inn air
CREATE TABLE "regional_auditions" (
  "episode_air_date" text,
  "audition_city" text,
  "date" text,
  "first_audition_venue" text,
  "callback_date" text,
  "callback_venue" text,
  "golden_tickets" real
);
SELECT "episode_air_date" FROM "regional_auditions" WHERE "callback_venue"='Rancho Bernardo Inn';