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: John was caught in the rain with his phone and it was ruined. Sentence2: He had to get a new phone that week and it had a new number. Sentence3: He sent a text to all of his friends to let them know. Sentence4: Still some people didn't have his new number. Sentence5: Luckily in time everyone was caught up.
His friends, Some people, John, Everyone