自助餐英文服务用语请帮我翻译这几句可以吗?请问咖啡需要添点吗?这些可以撤了吗?我们的营业时间到了可以坐到外面去聊天我们1

Excuse me ,do you want to add some more coffee?
can these be removed?
Excuse me.It's our operating time.
If you like,can sit outside to chat.
Our food will be over supllyed in 10:00.Which you like could take more.