Talk:Mission: Run QQ Run!/@comment-75.73.193.202-20190422025323/@comment-38109392-20190422031220

If you select the 2nd option, then I believe that'll exit the conversation without giving you the quest. If you want to take the mission later, then just talk to Gust again and select the mission option that pops up to the left of the Talk interaction. This is how all secondary missions behave (allowing you to choose when you want to start the mission; if you're busy, you can push things off).

If you fail a mission, that's it, you can't retry it. Not sure if there are any RP penalties or anything else negative for secondary missions, though if there are any subsequent missions in that questline, I don't think you'll be able to pursue them. (But if it's a main mission you've failed, then Higgins will take over and complete the project after a week or so of in-game time.)

Edit: Oh! I see. That's good to know, haha! Glad it wasn't completely bugged.