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: [2,4,5,6,4,8,9,10], target=10
Example solution: [2,8]
Example explanation: 2 and 8 are present in the list and sum to 10 which was the target sum

Problem: [20, 34, 39, 26, 35, 12, 13, 27, 44, 38, 49, 32, 28, 42, 18, 25, 22, 2, 8, 37], target=84

Solution: [35, 49]