Yes,but rarely has that ever happened.It has to be a death or I have to be on fire for me to not follow through with a promise to someone.I was taught from an early age to keep my word to people. I do not expect a good reaction from someone that I cancel on.They have every reason to be disappointed and/or pissed.It is an inconvenience and it puts people out to change plans at the last minute.It is a lack of respect to cancel on someone without a very good reason.It is a way of telling someone that their time is not as valuable as yours.