What is the vote number when immunity listed as David and reward is listed as none?
CREATE TABLE table_30717 (
    "First air date" text,
    "Reward" text,
    "Immunity" text,
    "Eliminated" text,
    "Vote" text,
    "Finish" text
)
SELECT "Vote" FROM table_30717 WHERE "Immunity" = 'David' AND "Reward" = 'None'
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 vote number when immunity listed as David and reward is listed as none? ### Input: CREATE TABLE table_30717 (
    "First air date" text,
    "Reward" text,
    "Immunity" text,
    "Eliminated" text,
    "Vote" text,
    "Finish" text
) ### Response: SELECT "Vote" FROM table_30717 WHERE "Immunity" = 'David' AND "Reward" = 'None'