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

[43, 9, 18, 2, 7, 24, 46, 45, 12, 36, 6, 27, 40, 38, 47, 33, 44, 16, 31, 8], target=98
[]