When were the callback auditions at Hilton Riverside Hotel held?
CREATE TABLE table_29527 (
    "Episode air date" text,
    "Audition city" text,
    "First audition date" text,
    "Audition venue" text,
    "Callback audition date" text,
    "Callback venue" text,
    "Golden tickets" text
)
SELECT "Callback audition date" FROM table_29527 WHERE "Callback venue" = 'Hilton Riverside Hotel'
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: When were the callback auditions at Hilton Riverside Hotel held? ### Input: CREATE TABLE table_29527 (
    "Episode air date" text,
    "Audition city" text,
    "First audition date" text,
    "Audition venue" text,
    "Callback audition date" text,
    "Callback venue" text,
    "Golden tickets" text
) ### Response: SELECT "Callback audition date" FROM table_29527 WHERE "Callback venue" = 'Hilton Riverside Hotel'