Display Screen with a Transitional Graphical User Interface

A portion of the disclosure of this patent document contains material subject to copyright protection. The copyright owner has no objection to the facsimile reproduction by anyone of the patent document or the patent disclosure, as it appears in the Patent and Trademark Office patent file or records, but otherwise reserves all copyright rights whatsoever. FIG. 1 is a front view of a first image of a display screen with a transitional graphical user interface; and, FIG. 2 is a front view of a second image thereof. The appearance of the graphical user interface transitions between the images shown in FIGS. 1 - 2 . The process or period in which one image transitions to another image forms no part of the claimed design. The broken-lines of the figures depict portions of a user device as well as related icon elements of an interactive content overlay and various environmental portions thereof. The broken lines illustrate the display screen and form no part of the claimed design. The broken lines illustrate portions of the graphical user interface and form no part of the claimed design.