Task: Story Composition
Input (English): Premise: My family visited me last week. 
 Initial Context: I met them at the airport. 
 Original Ending: We drove around the city for a while. I showed them the fun things in the city. When they left I was sad. 
 Counterfactual Context: I missed them at the airport.
Output (English): They took an Uber to meet me in the city for a while. I showed them the fun things in the city. When they left I was sad.