Question Summary:
Does responding with yes or Ok to a divorce thought constitute divorce?

Question Detail:

Does responding with yes or Ok to a divorce thought constitute divorce? for example one has a thought that if i did a specific thing or said a specific word it will mean divorce to me. And he say ok or Yes.  

Answer :

In the Name of Allah, the Most Gracious, the Most Merciful.
As-salāmu ‘alaykum wa-rahmatullāhi wa-barakātuh. 
The mere thought of divorce does not constitute divorce .^[1]
Furthermore, it is necessary for the words of divorce to be uttered or directed at one’s wife intentionally. [2]
In the enquired situation divorce does not take place.
And Allah Ta’āla Knows Best
Arshad Ali
Student Darul Iftaa
Trinidad
Checked and Approved by,
Mufti Ebrahim Desai.
http://www.daruliftaa.net/