Most sampling bots read like support widgets. We analyzed 4.2M Ballpitt chats to isolate the lines that drive both completion rate and add-to-cart intent.
The winning prompt formula keeps the product cameo under 15 words, mirrors the participant’s tense, and always asks for context before offering a code.
Prompt skeleton
- Set the scene with a micro-conflict (time, taste, budget).
- Offer a choice between two sampling perks instead of one freebie.
- Finish with a social proof nudge drawn from the participant’s interest graph.
Teams that adopted this structure saw a 19% lift in qualitative depth and a 24% lift in attributable sales compared to control chats.