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: The work day started out the same as always for Stan. Sentence2: He made some coffee and dragged himself to his desk. Sentence3: No sooner had he sat down than an attractive coworker came to him. Sentence4: She had concert tickets and wanted to know if he wanted to come. Sentence5: Stan declined because he was averse to having any kind of fun at all.
Stan, Coworker