Given the task definition and input, reply with output. 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: Keith and Zachary are big New York Knicks fans. 
 Initial Context: They always wanted to attend a game but could never afford the tickets. 
 Original Ending: Their neighbor Frank called them last Wednesday and left a message. Frank offered the boys his courtside seats for that nights game. Keith and Zach attended their first game and had the best time. 
 Counterfactual Context: They always attended the games because they had season tickets.

Their neighbor Frank called them last Wednesday and left a message. Frank offered the boys his courtside seats for that nights game. Keith and Zach accepted the upgrade to courtside seats. 