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

Example Input: [9, 27, 40, 16, 4, 10, 38, 1, 45, 23, 25, 31, 14, 21, 34, 36, 37, 28, 22, 33], target=18
Example Output: [4, 14]

Example Input: [33, 20, 3, 10, 11, 28, 44, 26, 6, 31, 40, 46, 15, 47, 8, 48, 34, 30, 4, 29], target=27
Example Output: []

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