Q: Stallin

Car hesitated going 40mph. Check engine light came on and I got to work. On my way home from Work the same day after driving for about 5 minutes, I pulled into the gas station and it died before I could pull it up to the pump. Started up and drove fine until the following night. I got off work and was driving 45 mph and it died while I was accelerating, put more gas to it and it started up while I was coasting. Both times it died were roughly in the same spot. Doesn’t die on my way to work but does on my way home normally 10-11pm. Threw P codes 0700 and 0344

And the first time it stalled the transmission felt like it was slipping. I just bout it on 12/29/17 and “as is” hasn’t even passed emmisons yet. I need help

My car has 89999 miles.
My car has an automatic transmission.