Clifford Nass and BJ Fogg’s study on reciprocity between users and computers found “users may be more likely to agree with, comply with, or help out [a computer] that has previously helped them. This ‘give-and-take’ may also lead to enhanced user performance and increased positive affect.”
Notice that not many AI assistants say sorry. It’s a personality design decision to stay positive and move forward. Provide users with next steps, compensation, suitable alternatives, and immediate gratification as other ways of acknowledging things didn’t go as the user has expected.