In this task, you're given a four sentences of story written in natural language. Your job is to complete end part of the story by predicting appropriate last sentence which is coherent with the given sentences.

Sentence1: Clyde decided to buy a smartphone. Sentence2: He didn't quite know how to use it. Sentence3: He talked to his grandchildren about it. Sentence4: They helped him figure it all out.
He now loves his smart phone!