title: Last Forever
context: "Last Forever" is the final episode of the CBS sitcom How I Met Your Mother. The episode serves as the 23rd and 24th episode of season nine, and the 207th and 208th episode overall; the episode's two parts are classified as two separate episodes. It aired on March 31, 2014.
question: When did the final episode of How I Met Your Mother air?
answers: March 31, 2014