What is the main service for the station with 14.849 million passengers 2011-12?
CREATE TABLE table_18118221_1 (
    main_services VARCHAR,
    total_passengers__millions__2011_12 VARCHAR
)
SELECT main_services FROM table_18118221_1 WHERE total_passengers__millions__2011_12 = "14.849"
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: What is the main service for the station with 14.849 million passengers 2011-12? ### Input: CREATE TABLE table_18118221_1 (
    main_services VARCHAR,
    total_passengers__millions__2011_12 VARCHAR
) ### Response: SELECT main_services FROM table_18118221_1 WHERE total_passengers__millions__2011_12 = "14.849"