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

[EX Q]: [15, 7, 36, 31, 5, 8, 21, 34, 23, 41, 30, 28, 49, 18, 40, 16, 24, 48, 19, 6], target=70
[EX A]: [36, 34]

[EX Q]: [11, 30, 12, 43, 28, 31, 17, 13, 46, 7, 34, 39, 2, 32, 27, 19, 22, 38, 14, 49], target=47
[EX A]: [30, 17]

[EX Q]: [7, 12, 4, 2, 39, 33, 23, 38, 14, 44, 16, 49, 27, 5, 31, 47, 43, 24, 41, 18], target=81
[EX A]:
[38, 43]