Dear John,
we've received your letter of March 12th, and wish to invite you to our company for further diacussion of the details on our cooperation. If you are coming, pls tell us your flight in advance, so that we can send a car to meet you at the airport.
亲爱的John,
我们收到您3月12日的来信,希望邀请您到我们公司,就我们合作的细节进行进一步的讨论.您如果来,请提前告知我们您的航班,以便我们派车去机场接您.