Interview a happy client for a case study

Help me interview a happy client for a case study.

My business: [what you do]
The client: [type of business or person]
The work I did: [details]
Results I noticed: [e.g. saved time, more sales, happier tenants]
How I'll use it: [e.g. website, proposals, social media]

Ask me up to 2 short questions first. Wait for my answers.

Then:
1. A short message asking permission and explaining how I'll use it.
2. 10 interview questions in order: the situation before, why they chose me, what happened, results, and what they'd tell others.
3. Follow-up prompts to get specific numbers or examples.
4. A notes template for the interview.
5. A reminder to get their approval before publishing.

Friendly and conversational, UK English.

Stay in this ChatGPT chat. Do not turn on apps or connectors, and do not use memory from another chat.