Organizing a picnic with the classmate

Tomorrow we are going to have a picnic with our classmates. It is amazing, when I invite some of the students, some will sign up and they said they are not sure if they are coming. I felt that the world has evolve in the way that people do not respect what they said anymore. In the pass when you say something, usually you will do it. But now, people tell you something and at the last minute they give you a call and everything changed.