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: Mandy was talking to her parents. Sentence2: She was telling them about her sleepover with a friend last night. Sentence3: The truth was that she had been out at a club instead. Sentence4: Soon her parents noticed that her store had many holes in it. Sentence5: They caught her lie and grounded her.
Mandy's friend, Mandy, Mandy's parents