If the person is annoying to you she or he is but if not they are not annoying they are not annoying at all. personally i have experience sitting next to an annoying friend called Travers, Georgie
-This is for you to figure out. -If you are the friend that's being annoying (if you might think) you will know when your friend starts to look really bored and sad. Also if you start to see a change...
If you don't prefer the friendship of this person the best thing to do is be honest, straight forward and polite - let them know your sorry but you don't feel there is a connection for a friendship...