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: Bill's mailman insists on throwing his packages around. 
 Initial Context: No matter how many times Bill talks to him it does no good. 
 Original Ending: So finally Bill calls the local Postmaster Bill's mailman gets fired. Bill has no issues after that. 
 Counterfactual Context: Eventually we confront him and find out that he's terrified of our dog.
So finally Bill agrees to lock the dog in the backyard when the mailman comes. Bill's mailman is thankful. Bill has no issues after that. 