Hello, I don't think we have met before.

你好，我们好像没见过面。

Hi, I just want to introduce myself.

你好，我就是想介绍下自己。

Nice to meet you. / Pleased to meet you.

很高兴认识你。

It's wonderful to finally meet you.

很高兴终于遇见你了。

I’m Rob. What's your name?

我是Rob，你叫什么名字？

My name is Rob. You must be Neil.

我的名字是Rob。你一定是Neil。