def METHOD_NAME(self, observation: Optional[str]) -> None:
    """
    Update the transcript with the observation
    :param observation: received observation from the Agent environment.
    """
    self.transcript += (
        f"{self.prompt_node_response}\n{self.observation_prefix} {observation}\n{self.llm_prefix}"
        if observation
        else self.prompt_node_response
    )