I think the list of available responses is very limited. Ideally it would be nice if you could modify the responses, either by adding to them or modifying the existing ones. For example, I always ride alone and sometimes friends will text me and say something like "Have a good ride." I would like to be able to reply "Thanks." Or if someone doesn't know I'm riding, I would like to tell them "Riding in Ohio" instead of just "Out riding."