كَوْنُ الْمَطْلُوبِ مَقْصُودًا لِلْمُتَكَلِّمِ لِذَاتِهِ أَوْ لِغَيْرِهِ
The requested outcome may be sought in itself or for some other objective.
Some requested outcomes are intended for their own sake; others are means to a further end. Asking for an address may be instrumentally motivated by a desire to visit.
This distinction explains how the first request can support an implied condition: the response often depends on the result that the request is intended to secure, not merely on the utterance of the request.