Can you please check out this sentence and give me suggestions how to make it sound more natural?

It is a back and forth communication designed for reaching an agreement when you and the other party have some mutual interests and others (interests) which are different.

Thank you in advance
Dear Antonia,

It is a back and forth communication designed for reaching an agreement when you and the other party have some mutual interests and others (interests) which are different.

«It is a two-way communication process, which is designed to help you reach an agreement when you and the other party have some, but not all, interests in common.»

But it is perhaps a little clumsy. A moderator may make it better.

Kind regards, Emotion: smile

Goldmund
Thank you Goldmund Emotion: smile,

(God, what was I thinking 'back and forth communication''Emotion: embarrassed)

It sounds good, but I don't know what to do with the last part of the sentence.
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I presume you are defining 'negotiation', Antonia.

A slightly compressed version, based on Goldmund's:

It is a two-way process designed for reaching an agreement when you and the other party have both mutual and differing interests.
Yes, I think your version conveys the meaning I need. Thank you Davkett