The dollar was marginally down on Friday and risk appetite boosted by statements from China on the need to find a solution to the tit-for-tat tariff war with the United States, raising hopes that a "phase one" deal could be reached.
Chinese President Xi Jinping said Beijing wants to work out a deal with Washington and has been trying to avoid a trade war - but is not afraid to retaliate when necessary.
Against a basket of currencies, the dollar was down less than 0.1%, breaking its three-day streak of gains and heading for its smallest weekly change since the start of August this year.
The Swiss franc was down 0.2% against both the dollar and the euro, suggesting market optimism as the Swiss franc is perceived as a safe-haven currency.
But the Japanese yen - also seen as a safe haven - was flat against the dollar.
The trade-exposed New Zealand dollar and Swedish crown were both up 0.2% against the U.S. dollar.
The euro was slightly up against the weaker dollar.