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: Terry bought a bag of chips from the store. Sentence2: When he got home, he realized the chips were expired. Sentence3: Terry brought the chips back to the store. Sentence4: The manager gave him a refund. Sentence5: Terry began to check expiration dates when he bought groceries.
Manager, Terry