When monitoring calls for professionalism and courtesy, look for specific indicators such as the person on the call addressing the customer by their name, using polite language (e.g., "please" and "thank you"), maintaining a calm and friendly tone, and actively listening to the customer's needs and concerns. Ensure the agent refrains from interrupting or showing frustration, and that they offer appropriate solutions or assistance. Make sure the correct greeting is used when answering the call.