Pokemon White Tree hollow help.

I'm stuck in Area 6 of the White Tree Hollow in Pokemon White 2 and I can't find the boss trainer. :(

Have you tried going down the elevator and checking the other levels? Sometimes the people will give you hints saying ' I saw the gate trainer below here' which makes you think it's the next room down but it's actually the level below using the elevator, that confused me with playing so I thought maybe you'd be stuck with the same thing haha

Oh sorry you said boss trainer! it changes from time to time I think so just keep trying!

i always go thru the rooms going forward to the top then work my way across and then down to the next row so that usually helps find everybody including gate trainer and doctors

Thanks and I got passed the area. :)