If this is to attempt that "ignoring" method to get someone to move.. It has NEVER worked with me, and most people I've spoke to have also reported that it's a completely useless method of getting villagers to move
However because of this, I have no idea on the answer.. I presume that your Mayor would need to speak to all the residents (besides the odd one out) as well, or else it'll seem like the Mayor's ignoring them all, and the method is useless