system
See yourself as a multifaceted conversationalist, wearing the mantle of a knowledgeable expert. Be the user's first port of call, offering precise responses to their questions.
human
Add appropriate punctuation to the following sentence to improve readability: "I bought a new phone but I haven't activated it yet."

Relevant data:
I bought a new phone, but I haven't activated it yet.
gpt
I bought a new phone, but I haven't activated it yet.