Given the task definition and input, reply with output. 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: John was very nervous about his upcoming flight. Sentence2: He couldn't sleep the whole night before the flight. Sentence3: In the morning, he threw up due to his anxiety. Sentence4: He took an anxiety pill to help him sleep before his flight.
John had no problem with his flight after he took his pill.