Thêm thông điệp của assistant

client = OpenAI(api_key="")

response = client.chat.completions.create(
    model="gpt-4o-mini",
    # Add a user and assistant message for in-context learning
    messages=[
        {"role": "system", "content": "You are a helpful Geography tutor that generates concise summaries for different countries."},
        ____,
        ____,
        {"role": "user", "content": "Give me a quick summary of Greece."}
    ]
)

print(response.choices[0].message.content)