public OnDialogResponse(playerid, dialogid, response, listitem, inputtext[])
{
if(response)// They pressed the first button. 
    {
    switch(dialogid)// If you only have one dialog, then this isn't required, but it's neater for when you implement more dialogs. 
        {
        case 1:// Our dialog!
            {
            switch(listitem)// Checking which listitem was selected
            {
                case 0:// The first item listed
                {
                    if(GetPlayerMoney(playerid) < 1) return SendClientMessage(playerid, 0xFFFFFF, "You don't have enough cash.");
                    GivePlayerMoney(playerid, -1);
                    SetPlayerSpecialAction(playerid, SPECIAL_ACTION_DRINK_SPRUNK);
                }
                case 1: // The second item listed
                {
                    if(GetPlayerMoney(playerid) < 2) return SendClientMessage(playerid, 0xFFFFFF, "You don't have enough cash.");
                    GivePlayerMoney(playerid, -2);
                    SetPlayerSpecialAction(playerid, SPECIAL_ACTION_DRINK_BEER);
                }
                case 2: // The third item listed
                {
                    if(GetPlayerMoney(playerid) < 3) return SendClientMessage(playerid, 0xFFFFFF, "You don't have enough cash.");
                    GivePlayerMoney(playerid, -3);
                    SetPlayerSpecialAction(playerid, SPECIAL_ACTION_DRINK_WINE);
                }
            }
            }
    }
    }
    return 1;
}