Reverse Engineer a Challenge-Response Algorithm

We have a project where we are communicating with a "Black Box". Before we can communicate with it, the Box sends us a 2-byte token to which we have to respond. The response we send is based on the token the Box sends us. We don't know what the algorithm is that’s used to generate the response. The task is to reverse engineering the algorithm used to generate the response. We have 4 examples of data the Black Box sends and the response it expects (see below). We have a fifth example we'll use to validate your algorithm. We'll pay $500 to the first person that can provide an algorithm that passes our test. Black Box --> Our Response 00 94 0E BF 00 7C C5 A7 03 4E 5E 88 01 EF C1 EB All values are in Hex.