I am wondering whether or not it is possible to have a three-way conversation between myself, you, and my Supply?

我很想知道，我，你和我的供给之间能否有个“三方”的对话？

youdao

The Three-Party Service enables a user to establish a three-way conversation, i. e. a simultaneous communication between the served user and two other parties.

三方业务使用户能建立一个三方通话，即在被服务的用户和另两方之间同时进行通信。

youdao

That night, in a three-way conversation with Gudenkauf, we compared our astonishing notes.

NPR: Challenger: Reporting a Disaster's Cold, Hard Facts

After holding a three-way telephone conversation with Russian President Vladimir Putin and French President Jacques Chirac to work out a common position on this issue, Mr Schroeder said it was important that "as far as possible" unity in the Security Council should be maintained.

BBC: Jacques Chirac, Vladimir Putin and Gerhard Schroeder