You are given a list of integers and an integer target, return a list of a pair of numbers in any order such that they add up to target. If there is no such pair of numbers, then return an empty list

[24, 29, 9, 12, 2, 18, 11, 7, 31, 6, 30, 14, 3, 41, 13, 33, 21, 47, 45, 4], target=22
[9, 13]