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: Tim was trying to think of a jingle. Sentence2: He needed to sell his new product. Sentence3: He refused to let anyone help. Sentence4: Tim thought hard, but couldn't think of anything.
Finally, he decided to let his friends help him.