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: I wanted a new phone. Sentence2: So I told my parents to buy me one. Sentence3: They said no. Sentence4: So I had to save up. Sentence5: And buy one on my own.
Output:
I (myself), Parents