Definition: 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
Input: [47, 29, 41, 34, 25, 11, 44, 27, 24, 3, 21, 28, 1, 49, 23, 46, 37, 26, 6, 14], target=46

[25, 21]