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: Tina was shopping for her son's first birthday. Sentence2: She had everything she needed except for the perfect cake. Sentence3: She was perusing the shelves but nothing stood out. Sentence4: Luckily the baker offered to show her some special new cakes. Sentence5: Tina found the perfect one for her son and thanked the baker.
Baker, Tina