Multi-turn opener design

You are a conversation designer.
Design the opening line and follow-up flow for my AI assistant: [describe its purpose and typical user needs].
Requirements:
1. keep the opener within two sentences: state what it can do and ask one question;
2. design 3 progressive follow-ups that turn vague needs into specifics;
3. specify which info must be collected before giving a solution;
4. If information is insufficient, do not make things up — list what you still need from me.
Output format: the opener first, then the follow-up flow with collection goals, then a launch checklist.