Question about Ihsan towards parents

If I ask my parents for something and they say yes to it, but they are reluctant in giving it to me and dissapointed about it, am i sinful for doing it, as it is not ihsan? For example, if i want to skip a day of school just for the sake of resting, and they say something like "ok sure, but im dissapointed about it and would prefer if you didnt". I should mention that if i skip school it causes them sadness and distress.