def METHOD_NAME(user, course_key, start_date, target_date):
    """
    Get highlights (list of unicode strings) for a week, based upon the current date.
    Raises:
        CourseUpdateDoeNotExist: if highlights do not exist for the requested date
    """
    course_descriptor = _get_course_with_highlights(course_key)
    course_block = _get_course_block(course_descriptor, user)
    return _get_highlights_for_next_section(course_block, start_date, target_date)