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: Ronnie was horseplaying with his friends near the pool. Sentence2: One of his friends shoved Ronnie. Sentence3: Ronnie lost his balance and fell in the pool. Sentence4: Ronnie realized his phone was still in his pocket. Sentence5: The phone was ruined and Ronnie was furious.
Friends, Ronnie