When were the callback auditions at Hilton Riverside Hotel held?
CREATE TABLE table_27455867_1 (callback_audition_date VARCHAR, callback_venue VARCHAR)
SELECT callback_audition_date FROM table_27455867_1 WHERE callback_venue = "Hilton Riverside Hotel"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_27455867_1 (callback_audition_date VARCHAR, callback_venue VARCHAR) Question: When were the callback auditions at Hilton Riverside Hotel held? [/INST] SELECT callback_audition_date FROM table_27455867_1 WHERE callback_venue = "Hilton Riverside Hotel" </s>