Name the original air date for series number 15
CREATE TABLE table_28550 (
    "Series #" real,
    "Title" text,
    "Directed by" text,
    "Written by" text,
    "Original air date" text,
    "Production code" text
)
SELECT "Original air date" FROM table_28550 WHERE "Series #" = '15'
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: Name the original air date for series number 15 ### Input: CREATE TABLE table_28550 (
    "Series #" real,
    "Title" text,
    "Directed by" text,
    "Written by" text,
    "Original air date" text,
    "Production code" text
) ### Response: SELECT "Original air date" FROM table_28550 WHERE "Series #" = '15'