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: The Smith family went on a road trip. Sentence2: They all piled in the car with snacks in tow. Sentence3: Their car broke down halfway there. Sentence4: The mechanic fixed their car and sent them on their way. Sentence5: The Smith's hit the road with new found energy.
Smith family, Mechanic