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: Jake was out eating with friends. Sentence2: He wanted to act tough and ordered spicy food. Sentence3: Even though the waitress warned him, Jake ate on. Sentence4: Within minutes he was in tears guzzling water. Sentence5: Jake never finished his food and his friends mocked him.
Jake, Waitress