Our manager would like to meet you.
我們經理想和你們見見面。

Our manager would like to invite you to a dinner party this evening at the Beijing Roast Duck Restaurant.
今晚我們經理想請你們去北京烤鴨店吃飯。

We are going to give a dinner party at the Beijing Hotel this evening and would like to invite you all.
今晚我們在北京飯店請客，請各位光臨。

If it's convenient, would you please tell your manager that he is invited.m very glad to know you.
如果方便的話，請您轉告經理一下，請他光臨。

If you are free, please come and join us.
如果您有時間的話，請光臨。