Given the task definition and input, reply with output. 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

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

[35, 49]