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: Charlie and Susan went on a date. Sentence2: They decided to eat at a nice restaurant. Sentence3: The two ordered a bottle of wine. Sentence4: Charlie ordered food for them both. Sentence5: The couple ate and drank and enjoyed themselves.
Charlie, Susan