You will be given a definition of a task first, then some input of the task.
Given a premise, an initial context, an original ending, and a counterfactual context, the task is to generate a new story ending aligned with the counterfactual context and as close to the original ending as possible. Each instance consists of a five-sentence story. The premise is the first sentence of a story, and the second sentence, which is the initial context, provides more information about the story's context and the story's general plot. The original ending is the last three sentences of the story. Also, a counterfactual context is a slight modification to the initial context. You should write a new story ending that edits the original story ending as little as possible to regain coherence with the counterfactual context. To sum up, you should write the last three sentences of a story based on the premise(first sentence) and the counterfactual context(second sentence) of the story.

Premise: Sam and his family went on a trip. 
 Initial Context: Sam was nervous. 
 Original Ending: He never slept in another bed before. When his family got to the hotel, everything was so cozy. Sam got the best sleep he ever had! 
 Counterfactual Context: Their flight was delayed for five hours.
Output:
He never got to sleep that night because the plane was so delayed and because he has trouble sleeping on flights. When his family got to the hotel, everything was so cozy. Sam got the best sleep he'd ever had. 