Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_name_14 (manner_of_departure VARCHAR, date_of_vacancy VARCHAR)

### Question ###
what is the manner of departure when the date of vacancy is 15 september 2008?

### Accurate SQL ###

SELECT manner_of_departure FROM table_name_14 WHERE date_of_vacancy = "15 september 2008"