user: Question: What is the title when original air date is May15,2008?
Columns: ['No. in series', 'No. in season', 'Title', 'Directed by', 'Written by', 'Featured character(s)', 'Original air date', 'U.S. viewers (million)']
Types: ['real', 'real', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: [73.0, 1.0, '" The Beginning of the End "', 'Jack Bender', 'Damon Lindelof & Carlton Cuse', 'Hurley', 'January31,2008', '16.07']
SQL:

assistant: SELECT "Title" FROM "Table" WHERE "Original air date" = 'May15,2008';