VK API on Python fields method, how to get the name?

Question

Python

Library
Desirable code
But if I understand something like this will be?

while True:
    try:
        messages = vk.method("messages.getConversations", {"offset": 0, "count": 20, "filter": "unanswered"})
        if messages["count"] >= 1:
              name = messages["items"][0]["last_message"]["first_name"]
              body = messages["items"][0]["last_message"]["text"]
              if body.lower() in ["Начать", "начать"]:
                vk.method("messages.send", {"peer_id": id, "keyboard": keyboard,"message": f"Привет  {name}", "random_id": random.randint(1, 2147483647)})

But this structure does not work, tell me what's wrong