You will be given a definition of a task first, then some input of the task.
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

[37, 42, 45, 12, 29, 14, 35, 41, 16, 13, 40, 30, 9, 10, 34, 18, 3, 48, 25, 20], target=91
Output:
[]