Joko's Ninja Exchange rewards!

You need to deliver Jack's letter to John, then go back to Jack and use the "ETC" option to tell him what John wants to say in reply.

The quests might be a little confusing because you have to use their "ETC" scripts a lot (which is related to the way they changed the quest data) and some of them (Like John's) are deceptively named.

But Jack doesn't give me a letter, I've spoken to him numerous times, and yea, using the etc thingy... :S

EDIT: Jack says to ask John first, then when I go to John, he only says something about the artifacts... No ETC option available on neither NPC chat...