The context of the following conversation is Carson started Jan on a diet program.  Jan lost 10 pounds in a week.:
Jan says Thanks to Carson's diet program I have lost some weight!..
The friend responds Wow so it's working?.
Jan responds Yes, I've lost 10 pounds in total..
The friend responds In one week? That's amazing..
Jan responds Yes, I am already feeling better too..
The friend responds That's great news..