answer:Yes, we do in the US. In the south it is used often. Sir and ma’am are used every day when addressing adults even in casual conversation. In other parts of the US it is used less often. It would be used when trying hard to get a man’s attention. For instance, if I were calling after someone at a distance, because they dropped money I might say in a loud voice, “sir, sir,” to get their attention. Those places in the US where sir is not used frequently often use miss when addressing women, not ma’am, but it varies. In our military, “yes sir” is often a required responses when given an order by a higher ranking officer, or even when not an order, but just out if respect during a conversation.