Initial English recognizer for CALL-SLT (Part 2)

I have done some more work on the English CALL-SLT recognizer, and we now have about 170 surface words. You can order food and drink in various ways, e.g.

i would like two beers
could i have a pizza

There is language for reserving tables, e.g.

do you have a table for two at seven thirty
could i have a non-smoking table for three people

I've also added a few more things like asking for the menu and the check. If I could say all this stuff in a language I didn't already know, say Chinese, I'd really feel I'd learned something useful!