Tie every nudge to an unfinished step
Follow-up works when it advances a half-finished order or booking. If the guest never shared party size or address, ask for that field. If they already have a payment link, remind them of that link—not the whole menu again.
- Restate the open item in one sentence
- Offer one next action and a polite stop option
- Log replied, ordered, booked, or closed—no silent repeats