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: I made a snowman today. Sentence2: I gave him a big smile. Sentence3: I found him a hat in the garbage. Sentence4: I placed the snowman in front of my home. Sentence5: I smiled at my snow day finished project.
I (myself), Snowman