Getting help from friend for literature search Suppose person A has a research project where they need to find a few articles on a particular topic, and write a review of these papers.

Being busy with other coursework, and feeling overwhelmed by the task of searching papers, person A decides to ask person B for help to find a list of articles on the topic. Person B is not a student in the course, but is willing to help person A.

Person A then reads the articles B found and writes their paper on their own.

Has there been plagiarism or other ethical violation committed?

EDIT: An additional concern is whether person A needs to credit person B's work. The goal of the paper would be to develop understanding of the field that the course is about, not specifically train for literature search. The submission will be graded.
Regardless of the method used in retrieving related articles, the decision to accept the sources and use the information provided in the articles is yours. There is no violation or problem that can come of it, as it is no different than searching for articles online. Is there any other information you are withholding that could make you worried about this practice enough to warrant your asking the question?