What should a server do if a guest requests an additional side dish?

When a guest requests an additional side dish, confirming the upcharge is the appropriate action for a server to take. This ensures transparency with the guest about any additional costs associated with their request. It is essential to maintain clear communication regarding menu items and pricing to enhance the dining experience and build trust with the customer. By confirming the upcharge, the server allows the guest to make an informed decision without any surprises when the bill arrives. This practice also reflects good customer service and attentiveness to the guest's needs.