What's the smallest season number?
CREATE TABLE table_30597 (
    "No. in series" real,
    "No. in season" real,
    "Title" text,
    "Directed by" text,
    "Written by" text,
    "Original air date" text,
    "U.S. viewers (million)" text
)
SELECT MIN("No. in season") FROM table_30597
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's the smallest season number? ### Input: CREATE TABLE table_30597 (
    "No. in series" real,
    "No. in season" real,
    "Title" text,
    "Directed by" text,
    "Written by" text,
    "Original air date" text,
    "U.S. viewers (million)" text
) ### Response: SELECT MIN("No. in season") FROM table_30597