Which of the following best describes an itinerary builder?

An itinerary builder is primarily designed as a software tool that enables users to create and customize travel plans tailored to their individual preferences. This tool allows travelers to input their desired destinations, activities, accommodations, and other preferences to generate a personalized travel schedule. The key advantage of an itinerary builder is its ability to integrate various elements of travel into one cohesive plan, making it easier for users to visualize and organize their trips according to their interests and needs.

Options like scheduling staff shifts, booking flights exclusively, or serving merely as a guide for travel agents do not encompass the comprehensive, user-centric functionality that an itinerary builder provides. These other tools may serve specialized purposes, but they lack the flexibility and customer-focus that define an effective itinerary builder.