Hello, nice to meet you. By the way, nice shoes you have.
你好,很高兴见到你。 顺便提一下, 你的鞋子很漂亮。
How about Mary? How long has she lived there?
玛丽怎么样?她在那儿住多久了?
If you want to send a letter to an office abroad that is in a different time zone, you can send a fax, and it will be received even though the office is not open.