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: Everyone attended class on the first day. Sentence2: Hannah carried her small dog with her. Sentence3: The teacher immediately noticed. Sentence4: He kicked her out since dogs were not allowed in class. Sentence5: She walked away with an attitude.
Everyone, Dog