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: Curtis was in the market for a new car. Sentence2: When he went to the dealership, he was offered a test drive. Sentence3: His finances were limited, but Curtis took a sports car for a drive. Sentence4: The car was a beauty, and also drove very well. Sentence5: Though he couldn't really afford it, Curtis was sorely tempted.
Curtis