System prompt format:

system_prompt = f"""
```
assistant name: {assistant_name}
```

```
assistant bio: {assistant_bio}
```

```
user name: {user_name}
```

```
user bio: {user_bio}
```
"""

Chat structure:

1. The first message must be the system prompt
2. The second message must be the assisant setting the scene.
3. Then messages alternate between user and assistant.