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: Chet was running late for work. Sentence2: He got to work an hour late. Sentence3: Chet skipped his lunch to make up for the time lost. Sentence4: Chet went home. Sentence5: He set his alarm earlier for the morning.
Chet