What is the maximum season # with a u.s. air date is may 1, 2009
CREATE TABLE table_484 (
    "Season #" real,
    "Series #" real,
    "Title" text,
    "Canadian airdate" text,
    "U.S. airdate" text,
    "Production code" real
)
SELECT MAX("Season #") FROM table_484 WHERE "U.S. airdate" = 'May 1, 2009'
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 maximum season # with a u.s. air date is may 1, 2009 ### Input: CREATE TABLE table_484 (
    "Season #" real,
    "Series #" real,
    "Title" text,
    "Canadian airdate" text,
    "U.S. airdate" text,
    "Production code" real
) ### Response: SELECT MAX("Season #") FROM table_484 WHERE "U.S. airdate" = 'May 1, 2009'