You can say `right' to show that you are listening to what someone is saying and that you accept it or understand it. `Your children may well come away speaking with a bit of a broad country accent' --- `Right.' --- `because they're mixing with country children.' = yes see also all right
You can use right to check whether what you have just said is correct. They have a small plane, right?
You use right in order to attract someone's attention or to indicate that you have dealt with one thing so you can go on to another. Right, I'll be back in a minute