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: Mandy was trying to buy her son a birthday gift. Sentence2: She knew one she wanted but it was a couple of dollars too much. Sentence3: She tried to find the best cheaper alternative. Sentence4: It began to seem like there were no good toys. Sentence5: Suddenly she saw the perfect affordable toy.
A:
Son, Mandy