Given the task definition and input, reply with output. 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: Amy had always wanted to be a mechanic. Sentence2: She thought working on cars was a very interesting job. Sentence3: So, Amy focused in school and did very well. Sentence4: After that, Amy went to an engineering college and got good grades. Sentence5: Now, Amy is a very good mechanic and is known throughout the nation.
Amy