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 company ( company_id number, rank number, company text, headquarters text, main_industry text, sales_billion number, profits_billion number, assets_billion number, market_value number )
TABLE: CREATE TABLE station_company ( station_id number, company_id number, rank_of_the_year number )
TABLE: CREATE TABLE gas_station ( station_id number, open_year number, location text, manager_name text, vice_manager_name text, representative_name text )

### Question ###
What are the headquarters that have both a company in the banking and 'oil and gas' industries?

### Accurate SQL ###

SELECT headquarters FROM company WHERE main_industry = 'Banking' INTERSECT SELECT headquarters FROM company WHERE main_industry = 'Oil and gas'