The person taking your order deserves the same courtesy as the person sharing your table.

There is a habit of dividing a room into people who count socially and people who are there to provide something, and switching manner between them without noticing. The switch is visible to everyone, including the person on the wrong side of it. How you speak to someone who cannot answer back describes you better than anything you say to a friend.

On your next outing, give the same attention to the person serving as to the one across the table. Look up, use their name if you have it, and let your side of the exchange be unhurried.