I remember, years ago, I didn't have a vehicle and had to use public transit. I had visited a girl, left her place and was walking across a main street to a bus stop. A patrol car was sitting in the parking lot on the corner. The officer got out and called me over to his patrol car. He asked me where I'd been and where I was going. I told him. He then asked me for my name/address and I gave it to him. He then told me that a personal robbery had happened not to far from the bus stop and they were looking for a man. He also told me that there wasn't much of a description of the man, other than his build and height, that matched mine. He said "thank you for the information (my name, etc.) and have a nice evening." The bus came up, I said "goodbye Sir" and got on the bus. During the entire time he was talking to me, I said "yes Sir", "no Sir" of which he liked.