I have a golden retriever puppy. She loves to chase and retrieve things. They are hunting dogs.
Thats nice. Do they use them for people that need disability assistance? 
As a matter of fact, they do. They can be used as a hearing dog for deaf people or as a guide dog for people who are blind. 
Yeah thats right, I think I heard about them being used as guide dogs. What type of temperament do they have?
They are so friendly and gentle. They don't make good guard dogs, they are too nice! They are one of the most popular family dog breeds in the US.
Aww makes me want to get one. How does American Golden Retrievers differ to the British or Canadian ones? 
Interesting question. I'm not aware of any differences. I know the breed is very popular in other countries, like Brazil, Australia, and the UK.