You will be given a definition of a task first, then some input of the task.
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.

Sentence1: Allie was getting engaged. Sentence2: She told all her friends. Sentence3: They were not happy for her. Sentence4: Allie was so disappointed. Sentence5: She then realized maybe they were not true friends.
Output:
Friends, Allie