How a tour company actually sells
A tour company sells a dated, finite thing. Twenty-four seats on the fourteenth, twelve of which are gone, with a minimum of sixteen for the departure to run and a cut-off three weeks out. Every conversation with every traveller is downstream of that reality, and the sales operation exists to fill seats before the cut-off rather than to generate enquiries in the abstract.
This makes the trade unusually measurable and unusually unforgiving. A departure either runs or it does not. A seat left unsold on the day of travel has no residual value at all, and a departure cancelled for being three seats short costs you the refunds, the supplier commitments and a group of travellers who will book with somebody else next season. The whole discipline is about seeing the shortfall early enough to act.
The third feature is that demand arrives through two very different doors. Direct travellers, who need reassurance, joining details and often a nudge to book. And agents or partners, who block seats speculatively and convert some fraction of them. Both fill departures, but they need entirely different management, and blending them makes your seat position look healthier than it is.