The Quit Smoking Helpline?

I keep hearing commercials on the radio about some kind of quit smoking helpline. Basically, I think they offer you some type of guide that offers you encouragement if you're trying to quit? At first thought I thought it wouldn't work. But on second thought, it makes sense.

I would appreciate having a person there to help me. For example if I was feeling a craving I could call in and have some sense talked into me. Or maybe they do more than that, has anyone used something like this?

Personally I think that you quit smoking when you are ready, nothing else matters.