This service is specifically designed to help you get connected with smaller bands.
There are plenty of services to find major acts and this service will pick up some
of them as well.
It is not very fancy, it simply returns you the web page of the venue announcing the act, it is up to you to visit said page and find out the dates. Keep in mind this is a service that crawls pages, we do not get the information in a form that would be easy to extract dates from.