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

[18, 11, 44, 20, 33, 38, 14, 21, 43, 9, 5, 42, 27, 29, 37, 25, 28, 3, 8, 49], target=48
[43, 5]

[23, 32, 14, 10, 1, 28, 41, 45, 11, 35, 39, 6, 15, 7, 37, 33, 42, 26, 4, 2], target=11
[10, 1]

[13, 8, 21, 24, 11, 41, 7, 4, 45, 35, 30, 31, 34, 16, 26, 42, 18, 2, 20, 46], target=51

[21, 30]