a BB assistant usage question

I asked BB assistant "Blackberry limited stock price". The Assistant asked me back "Would you like to search your device for Blackberry limited stock price". If I respond "Yes", it gives me a lot of small icons, Bing, Google, Yahoo etc. That is the end of searching. If I respond "No", the search is cancelled. Why?

Basically I asked the exact same question as a Youtube user, N4BB.COM with a title of "Voice Command Battle" (sorry no link for newbie on this forum). His question starts at 7:06. His assistant gives him a price and a correct respond/answer, but not mine. Why? All of my setting are default.
Thanks for your help.

you are not going to find that information on your device. ask it to search the internet for the info

If you take a look at that video, you will see I asked the exact same phase of question, "Blackberry limited stock price" as his. His assistant can find answer correctly without telling it to search the web. Somehow, my assistant goes directly to my device to find answers. However, if I ask "How far is the distance from LA to DC", it finds answer correctly. I am puzzled.

The word "blackberry" makes the assistant go nuts...