chat_completion = client.chat.completions.create(

    messages = [
        {
            "role": "user",
            "content": "Say this is a test.",
        }
    ],

    model = "gpt-4o",
)

while True:
    user_input = input("사용자: ")
    message_history.append({"role": "user", "content": user_input})
    chat_completion = client.chat.completions.create(

        messages = message_history,

        model = "gpt-4o",
    )
    assistant_response = chat_completion.choices[0].message.content
    message_history.append({"role": "assistant", "content": assistant_response})