We look forward to a successful working relationship in the future

• We look forward to a successful working relationship in the future
• I hope we can work together again soon
• I hope that in the future we might be able to collaborate with you on a course/project like this
• ......But, I still hope we can work together sometime to develop something that will include some perspectives that we can supply and combine it with the expertise that your department has...
• Hope we can cooperate in near future
• I hope you are interested in a cooperation with me
• I hope we can collaborate on future projects

News Source: Goal.com, RT.com, theguardian.com, Dailymail.co.uk