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

[16, 42, 44, 30, 20, 19, 12, 48, 21, 34, 5, 4, 46, 49, 25, 8, 9, 35, 28, 17], target=90
[42, 48]