Here’s how the experience ended. We were walking out the door and my wife mentioned to the hostess that “we would be back because the hazelnut tartuffo was great.” The hostess replied that “we should come back for the Limoncello instead.”
When a guest shares with you that they have enjoyed something, the correct response is to acknowledge and honor that thought. Afterwards, you may interject that they should also sample some of the other offerings. Do not casually disregard their thought by emphasizing what you think they should return for.
Remember it is your guest's dining experience.