I get it though. I'm off for the summers since I'm a teacher. Many times we'll leave town and really not have hardfast plans about when we are returning because we have the luxury of that kind of flexibility. He may just mean he's going out of town during vacation and isn't sure when he'll be back in town. That doesn't necessarily mean he doesn't know when he'll be back at work. It just means he doesn't plan to make those kinds of contacts until he is physically back in town.