Define A Style

import instructor
from pydantic import BaseModel
import openai


class Email(BaseModel):
    subject: str
    message: str


client = instructor.from_openai(openai.OpenAI())


def generate_email(subject, to, sender, tone):
    return client.chat.completions.create(
        model="gpt-4o",
        messages=[
            {
                "role": "user",
                "content": f"""
                Write an email about {subject} to {to} from {sender}.
                The email should be {tone}.
                """,
            }
        ],
        response_model=Email,
    )


if __name__ == "__main__":
    email = generate_email(
        subject="invitation to all-hands on Monday at 6pm",
        to="John Smith",
        sender="Jane Doe",
        tone="formal",
    )

    print(email.subject)
    #> Invitation to All-Hands Meeting
    print(email.message)
    """
    Dear John Smith,

    I hope this message finds you well.

    I am writing to formally invite you to our upcoming all-hands meeting scheduled for this Monday at 6:00 PM. Your presence and participation would be greatly valued as we discuss important updates and initiatives.

    Please let me know if you have any questions or need further information.

    Best regards,
    Jane Doe
    """