y the way/besides,we hope that you can arrange time to come to talk with our our manager on the question how to cooperate with each other better next Wednesday.
In addition/By the way, we hope that you can arrange time for our manager to discuss further how to get a better co-operation between us next Wednesday.
In addition, we hope you can schedule to our company to have a meeting with our managers, discussing how to further our cooperation in the future next Wednesday.