This is the 17607th most frequent Russian word.
туроператорам
"To tour operators" (dative plural form of "туроператор").
The word 'туроператорам' (to the tour operators) is in dative case, indicating the indirect object of the sentence, the recipients of the action (the request).
Мы отправили запрос туроператорам для уточнения деталей.
We sent a request to the tour operators to clarify details.
Here, 'туроператорам' is used to describe the entities receiving the information, again in dative case as indirect objects.
На выставке туроператорам предоставляли важную информацию.
At the exhibition, important information was provided to the tour operators.
In this example, 'туроператорам' shows who needs to perform the action, used here in dative case to indicate necessity.