Write SQL query to solve given problem: Please list the dates on which a male customer has purchased more than 3 root beers.. Keep the solution inside sql tag ```sql [SQL-Query] ```
SELECT T2.TransactionDate FROM customers AS T1 INNER JOIN `transaction` AS T2 ON T1.CustomerID = T2.CustomerID WHERE T1.Gender = 'M' GROUP BY T2.TransactionDate HAVING COUNT(T2.CustomerID) > 3