
Let's examine a chat conversation. Here's the history:
```
NAME_1: Hello, how are you doing today?
NAME_2: I'm doing well, thank you. And you?
NAME_1: I'm also doing well.
NAME_3: Hi everyone, just joining the conversation.
NAME_1: Welcome!.
```

Now, consider the last message in this conversation:
```NAME_2: Why do you join the conversation?```

Who is the recipient of this message?

Answer:

