Thank you.
My version is 0.7.1 and download here.
Restarting the game again solved this problem.
In the previous game, I first talked to the women around me and then go to the dancing woman. next, I go to barmaid, I can't find tequila.
In the game restated, I first talked to the dancing woman and go to the barmaid, so I was able to buy tequila.