Q: 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
[31, 29, 8, 22, 7, 2, 48, 35, 12, 13, 16, 34, 17, 40, 1, 45, 43, 39, 20, 26], target=39
A:
[31, 8]