A Greek couple on honeymoon in New York have been left without any money after their government shut down its country's banking system. Newlyweds Valasia Limnioti and Konstantinos Patronis had planned a "dream trip" to America that would take them coast-to-coast to Los Angeles. Last Sunday, the UK Foreign Office warned that credit card processing and withdrawals from ATMs involving the Greek banking system could be limited after the Greek Prime Minister Alexis Tsipras ordered the banks to close .