To be honest mate, he is going to recommend diazepam I would expect, although I was prescribed clonazepam in low doses to take as needed for anxiety by one doc a few years back. It's hard to go in there quoting drugs though and asking for specific ones. I would say that you don't want something that is going to make you tired and monged out for the whole day but you want something quick acting that can relieve anxiety, clonazepam isn't particularly sedating so he might prescribed you that. If he starts to suggest another then maybe say that you have a mate that takes clonazepam and has similar problems and it seems to work for him.
Be totally honest with him about how your anxiety is and what triggers it most and how you want it to stop, and he should prescribe you something, he wont prescribe xanax, but may prescribe clonazepam or lorazepam, worst case diazepam.