CREATE TABLE table_22294 ("No. overall" FLOAT, "No. in series" FLOAT, "Title" TEXT, "Director" TEXT, "Writer" TEXT, "Original air date" TEXT, "Production code" FLOAT)

Name the original air date for barnaby southcomb for charlie martin
SELECT "Original air date" FROM table_22294 WHERE "Director" = 'Barnaby Southcomb' AND "Writer" = 'Charlie Martin'
SELECT "Original air date" FROM "table_22294" WHERE "Director" = 'Barnaby Southcomb' AND "Writer" = 'Charlie Martin'