Generate python code based on based on the evaluation paper "Co-Writing Screenplays and Theatre Scripts with Language Models", using huggingface transformer library, any available large language model pretrained checkpoint, and python. The functions should be divided into 3 hierarchical layers of abstraction. 

The highest layer is user input, a single sentence describing the central dramatic conflict. 
The middle layer generates character descriptions, a plot outline (a sequence of high-level scene descriptions together with corresponding locations), and location descriptions. 
The bottom layer is generated character dialogue for the text of the script.
user
你好
assistant