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_14225409_1 (reg_season VARCHAR, playoffs VARCHAR, us_open_cup VARCHAR)

### Question ###
What was the regular season standings for the year when the playoffs reached the conference semifinals and the team did not qualify for the US Open Cup?

### Accurate SQL ###

SELECT reg_season FROM table_14225409_1 WHERE playoffs = "Conference Semifinals" AND us_open_cup = "Did not qualify"