Needs Another Side Explanation

(I’m a waitress at a fairly well-known restaurant chain that does lunch combos on weekdays. I am serving two little old ladies and trying to explain the combos to them.)

Me: *pointing to column A on the menu with both women looking at it* “If you get two items from this column, it’s $6.99.” *pointing to column B* “Two from here would be $8.99.” *pointing to both columns* “If you get one from each side then it’s $7.99.”

Old Lady #1: “Okay. I see.”

Me: “Do you need a little more time to decide?”

Old Ladies: “Yes, please.”

(I leave and return a couple of minutes later.)

Me: “Did I give you enough time?”

Old Lady #2: “I suppose we’ll both have the shrimp linguine.”

Me: “Okay, and what would you like with it?”

Old Lady #2: “Oh, what comes with it?”