你好，我想了解一些关于你们飞往美国的航班信息。

___Hello, I'd like some information about your flights to the USA, please.

你好，你能告诉我你们商店的营业时间吗？

___Hello, could you tell me the opening hours of your store?

你好，我是约翰，从伦敦打来。

___Hello, this is John calling from London.