List all the dates of enrollment and completion of students.
SELECT date_of_enrolment ,  date_of_completion FROM Student_Course_Enrolment
SELECT date_of_enrolment ,  date_of_completion FROM Student_Course_Enrolment
[{'date_of_enrolment': '2017-10-09 07:09:02', 'date_of_completion': '2018-02-26 07:48:52'}, {'date_of_enrolment': '2017-11-13 12:49:33', 'date_of_completion': '2018-03-04 01:24:56'}, {'date_of_enrolment': '2017-10-17 13:50:40', 'date_of_completion': '2018-03-22 02:53:01'}, {'date_of_enrolment': '2017-09-06 06:27:15', 'date_of_completion': '2018-03-07 09:45:48'}, {'date_of_enrolment': '2017-08-20 01:07:18', 'date_of_completion': '2018-03-06 00:27:09'}, {'date_of_enrolment': '2017-09-24 15:17:26', 'date_of_completion': '2018-03-01 00:08:30'}, {'date_of_enrolment': '2017-09-21 07:05:01', 'date_of_completion': '2018-03-04 22:34:37'}, {'date_of_enrolment': '2017-12-07 02:21:13', 'date_of_completion': '2018-02-27 20:06:06'}, {'date_of_enrolment': '2017-08-02 17:21:44', 'date_of_completion': '2018-03-07 00:39:37'}, {'date_of_enrolment': '2017-10-10 10:05:03', 'date_of_completion': '2018-03-19 07:34:05'}, {'date_of_enrolment': '2017-08-17 00:16:46', 'date_of_completion': '2018-03-16 09:00:44'}, {'date_of_enrolment': '2017-11-30 11:40:56', 'date_of_completion': '2018-03-02 14:38:49'}, {'date_of_enrolment': '2017-10-26 20:42:34', 'date_of_completion': '2018-03-10 16:38:28'}, {'date_of_enrolment': '2017-07-15 12:48:43', 'date_of_completion': '2018-03-18 03:23:54'}, {'date_of_enrolment': '2017-12-09 20:49:23', 'date_of_completion': '2018-02-28 09:34:51'}, {'date_of_enrolment': '2017-12-16 15:53:06', 'date_of_completion': '2018-03-22 18:04:54'}, {'date_of_enrolment': '2017-10-29 15:39:31', 'date_of_completion': '2018-03-01 07:12:39'}, {'date_of_enrolment': '2017-11-22 18:29:18', 'date_of_completion': '2018-03-09 17:56:18'}, {'date_of_enrolment': '2017-10-23 08:23:22', 'date_of_completion': '2018-02-26 23:46:25'}, {'date_of_enrolment': '2017-12-04 12:16:10', 'date_of_completion': '2018-03-14 23:33:47'}]