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

[30, 41, 28, 8, 42, 4, 39, 16, 36, 33, 13, 32, 35, 34, 6, 49, 27, 29, 40, 44], target=28
[]