1. begin a conversation or two-way communication, mediate between (two) parties
Professional
Social
open a political/professional/personal dialogue between
A dialogue is a conversation involving two people. When you 'open a dialogue' with someone you initiate a two-way conversation in order to exchange views or ideas. Then you open a dialogue it also suggests that you are open to input or happy to be challenged on your position. This is a formal expression used more in professional contexts.