You have to build up friendship with the villagers in this game. At the very beginning, they don't like it when you talk to them too much because you haven't built up friendship. I would suggest just making sure to talk to them a little bit very day. Eventually (it takes maybe a week for the starting 2 villagers - it will be faster for future ones) you'll unlock the ability to give them presents when you talk to them. Once you get to that point, they are more OK with you talking to them longer. Also, make sure to start giving them presents when you unlock the ability to. If you're a person who doesn't like to change their outfits or their house, you can give them fruit. Wrapped fruit is even better.