Detailed Instructions: In this task, you're given a story (which contains five sentences only). Your task is to find all the characters which are available in the given story.
Q: Sentence1: Lucy had a crush on a guy at Blockbuster. Sentence2: She was certain he liked her too. Sentence3: When she inquired about his age he told her he was 16. Sentence4: Lucy was 11, but she told him she was 13. Sentence5: Lucy knew he didn't believe her when he walked away shaking his head.
A:
Lucy, Guy at blockbuster