What is the ship date of the order by the customer named Ann Chong in the central region?
Ann Chong' is the "Customer Name"; Region = 'Central'
SELECT T2.`Ship Date` FROM people AS T1 INNER JOIN central_superstore AS T2 ON T1.`Customer ID` = T2.`Customer ID` WHERE T1.`Customer Name` = 'Ann Chong' AND T1.Region = 'Central'