Which Date has a Runner(s)-up of bernhard langer, and a Tournament of at&t championship?
CREATE TABLE table_name_3 (
    date VARCHAR,
    runner_s__up VARCHAR,
    tournament VARCHAR
)
SELECT date FROM table_name_3 WHERE runner_s__up = "bernhard langer" AND tournament = "at&t championship"
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: Which Date has a Runner(s)-up of bernhard langer, and a Tournament of at&t championship? ### Input: CREATE TABLE table_name_3 (
    date VARCHAR,
    runner_s__up VARCHAR,
    tournament VARCHAR
) ### Response: SELECT date FROM table_name_3 WHERE runner_s__up = "bernhard langer" AND tournament = "at&t championship"