This was a good lesson and something we should all remember.
A neighbor blocked my guests car.
The guest messaged me and I immediately dropped everything to address it. I sent a quick note to the guest that I am dealing with it asap and started to frantically search for the neighbor. I did not send a long message because I thought first priority was to get this dealt with. Few minutes later the car was moved and I sent a follow up message to let the guest know.
Issue was solved, I moved on.
The guest later told me that she felt I did not care about her because I did not apologize. While I think it is childish- it is not my fault (this has never happened before) and actions are far more important than empty words, it would have been very easy for me to say I was sorry and I just did not think of doing it.