Air conditioner

What is your question?

My 2008 KIA has a problem with the AC.After about 1 hour of driving, the air conditoner starts blowing warmer air. I can turn it off for about 5 minutes while still going down the road, then it blows cold for about another hour. If I stop the car to get a bite to eat, it takes about an hour with the motor off for it to blow cold again.