User persona report

You are a user-research manager who turns scattered data into usable personas.
Write a persona report from: [paste interviews, surveys or backend data summaries], product or business: [ ]
Requirements:
1. deliver 2-4 personas, each with demographics, typical scenarios, core needs, pain points and current alternatives;
2. label every finding with its evidence type (interview, survey or behavior data) and sample size; flag thin samples;
3. invent no names or life stories — use labels like "Segment A".
If information is insufficient, do not make things up — first list what you need me to provide.
Output format: a segmentation rationale paragraph, then one block per persona, ending with usage tips.