Which phrase indicates a friendly customer service interaction at the time of order delivery?

The phrase "Would you like any parmesan or plastic silverware?" signifies a friendly customer service interaction during order delivery because it conveys a personal touch and attentiveness to the customer's needs. By asking about additional items, it shows that the server is not just focused on completing the transaction but is willing to enhance the customer's experience. This approach encourages a dialogue and suggests an interest in ensuring the customer's satisfaction, fostering a welcoming atmosphere.

In contrast, the other phrases tend to be more transactional or straightforward. While "Come back soon!" is positive, it lacks the immediacy and engagement of offering something extra at the moment of delivery. "This is your order!" is more functional and lacks warmth. "Your order is ready" simply confirms completion without inviting further interaction, making the offer of extra items the most embodying of friendly customer service.