Part of the big challenge here in my mind is that companies are reluctant to put data into the world for others to consume in a friendly way - if, say, event organisers, put data out as open-API's, there would be the opportunity for a self-hosted or "convenient" third party (ala Google, Amazon) to create conversational experiences on top of it - private user and privacy uninterested user is well served (as is "event seller" as it's exposed to more people). But, as long as we're stuck with systems having to pull data by web scraping, no one can build a good solution that could work for either scenario.