user: Question:  what's the original air date where written by is Iain Morris & Damon Beesley
Columns: ['No. in series', 'No. in season', 'Title', 'Directed by', 'Written by', 'Original air date']
Types: ['real', 'real', 'text', 'text', 'text', 'text']
Sample row: [13.0, 1.0, '" A Good Opportunity "', 'James Bobin', 'James Bobin & Jemaine Clement & Bret McKenzie', 'January18,2009']
SQL:

assistant: SELECT "Original air date" FROM "Table" WHERE "Written by" = 'Iain Morris & Damon Beesley';