不知道我是哪里错了呢

外贸一个多月，好不容易接到一个小单，感觉比较有希望，一直在讨论这个付款方式，因为对方要我们能通过国际支付宝付款的，后来我部他在哪个港口，我才可以核算费用，然后他这样回我We are based in the Republic of Ireland' and the closest Port is either Dubin or Belfast in Northern Ireland ( Belfast is across the border in the Northern Ireland, but still very close to where we are situated.)，然后我给他回复I can't find your nearly port , do you he forwarder by yourself ,if I can deliver the goods in shenzhen port.然后他就没回我了，我该怎么，该怎么给他发邮件呢，请教论坛元老