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.
Q: Sentence1: Ray bought a new phone and was playing with he. Sentence2: He was walking as he tried out the new features. Sentence3: A dog suddenly ran past Ray as he was walking! Sentence4: The dog surprised Ray so much that he dropped his phone. Sentence5: The phone hit the ground and the screen broke.
A:
Dog, Ray