How can Iconfinder’s API be leveraged to enhance UI/UX in a booking platform?

I am working on a personal driver Dubai monthly booking system and exploring ways to improve the user interface. Iconfinder’s API provides structured icon data, but I’d like to understand how it can be effectively used in service-based applications.

What are the best practices for integrating API-based icons into a booking system?
Are there any examples of platforms using Iconfinder’s API for UI improvements?
How can icons enhance user experience and navigation in such applications?
Looking forward to insights from developers familiar with API-driven UI design!