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

[40, 15, 30, 11, 16, 43, 42, 10, 17, 49, 13, 38, 7, 25, 24, 44, 1, 32, 12, 5], target=39
[15, 24]

[42, 29, 12, 38, 31, 17, 15, 1, 14, 23, 8, 5, 20, 34, 21, 47, 4, 49, 24, 19], target=30
[29, 1]

[1, 15, 40, 9, 48, 19, 39, 38, 2, 42, 14, 29, 27, 30, 20, 41, 32, 47, 35, 33], target=72

[42, 30]