my brother was the same until he was nearly 3 , just pointed to what he wanted,so my mum decided to ignore what he was pointing to and give him something else instead to see what he would do.As she passed him the wrong thing she said nothing more than "is this what you want" give it to him and walk away.The second day she started to do the same and when she enquired as to if thats what he wanted he looked straight at her and said "well no actually" :-) so like others have said he probably has no need to ask as he gets what he wants anyway,they learn quickly :-)