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.
Input: Sentence1: June was volunteering in her school's cafeteria this week. Sentence2: She was loving all of her tasks so far. Sentence3: One day she had to learn to make the pizza. Sentence4: Unfortunately, she burned the pizza and ruined a whole batch. Sentence5: Luckily, the cafeteria monitors forgave her.
Output:
June