Nathaniel Hawthorne wrote The Scarlet LetterThe Scarlet Letter has genre Romance novelRomance novel has examples: Welcome to Temptation
[Human]: I like the author Nathaniel Hawthorne, do you have any similar author? [Assistant]: The Scarlet Letter and the House of Seven Gables are really good books from him.  [Human]: What genre is it, do you have more titles? 
Romance Novels. We have Welcome to Temptation, Where Rainbows End and Water for Elephants are all great books. 