It is not bad to follow your sales script, especially if it comes from your client. In fact, you should follow it to the letter. But if you want to do better, then you have to take some initiatives and decide on your own if you should add more qualifying questions during the call. This will require some experience for you to do it right (not to mention a few experimentation), but in the end, this might be just what you need to generate more B2B leads. Such a judgment call may not be that bad to make, you just have to try.