human
Existing Text : 
The list of books to read is : 
1. To Kill a Mockingbird 
2. The Great Gatsby 
3. Pride and Prejudice

User Input:
Add The Catcher in the Rye to the list
gpt
The list of books to read is : 
1. To Kill a Mockingbird 
2. The Great Gatsby 
3. Pride and Prejudice 
4. The Catcher in the Rye