Have you seen luka.ai they have been doing it for quite a while. Doing something very similar.
This query should be able to summarize well. It will be great if we can collabrate on data sharing at some level.
Myra is different from them in that it is first and foremost an intent understanding system, which has the ability to judge which service to use to satisfy it. The ability to help recommend/plan an evening out is the first amongst a broader set of things it can do.