user: Question: When did the episode written by Jim Morris air?
Columns: ['No.', '#', 'Title', 'Director', 'Writer', 'US air date', 'Storyteller', 'Villains']
Types: ['real', 'real', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: [79.0, 1.0, '"The Tale of The Silver Sight, Part 1"', 'Mark Soulard', 'D. J. MacHale', 'April 2, 2000', 'N/A', 'The Evil Spirit']
SQL:

assistant: SELECT "US air date" FROM "Table" WHERE "Writer" = 'Jim Morris';