汉译英，就一句！

Hello Sir,

How are you!

It's a great honor for us to have your presence at our counter.
或 We welcome you to our company
结尾时说Nice seeing you.

Hello,sir.
Nice to meet you and welcome you to the exhibition of our company.

Gentleman:
You are good!
Extremely happy and welcome you to patronize our company the booth

我是从翻译网上弄来的

hello,sir
Glad to meet you

Hello Sir,

How are you!

It's a great honor for us to have your presence at our counter.

Gentleman: Hello!
Extremely happy... ...