Does this classify as Information retrieval?
You could consider that a form of information retrieval, if you want.  It sounds like keyword matching, so not one of the more sophisticated forms of information retrieval, but sometimes the simplest solutions are the best.

I wouldn't worry too much about the name.  There's no strict, hard-and-fast definition of exactly what counts and what doesn't.  The term serves as an aid for communication, and to my way of thinking, it sounds fine to consider what you are doing as a form of information retrieval.