Ten months ago I made a movie demonstrating a simple time series conversational engine. (I opened my "Quantile regression" presentation at WTC 2014 with that movie.)
Today I published a blog post that discusses the design and programming of the conversational engine: Simple time series conversational engine .
The conversational engine responds to commands for:
A package with all of the code of the conversational engine can be downloaded from GitHub,  and executed with Import:
More about functional parsers, which were essential for the building of the conversational engine, can be read in "Functional parsers" by Fokker.
Here are some commands to try: