Design a simple escalation framework for recurring passenger complaints on one flight.

I would design a three-level escalation framework. Level one is individual handling: the nearest crew member resolves the complaint if it is isolated and small. Level two starts when the same complaint appears multiple times or in multiple rows, which means the issue is now a pattern and the crew needs a shared message. Level three is lead ownership, where the complaint trend is affecting cabin mood, service flow, or operational trust.

At level two, I would require a quick crew sync so everyone knows what the issue is, what can be offered, and what should not be promised. That prevents the worst version of recurring complaints, where each crew member tries to solve it differently and the inconsistency becomes the real problem.