user: Question: Name the original air date for Barnaby Southcomb for Charlie Martin
Columns: ['No. overall', 'No. in series', 'Title', 'Director', 'Writer', 'Original air date', 'Production code']
Types: ['real', 'real', 'text', 'text', 'text', 'text', 'real']
Sample row: [32.0, 1.0, '"Episode 1"', 'Barnaby Southcomb', 'Richard Stoneman', '26October2004', 401.0]
SQL:

assistant: SELECT "Original air date" FROM "Table" WHERE "Director" = 'Barnaby Southcomb' AND "Writer" = 'Charlie Martin';