Could anyone please help me ??

@RonitSSS 

Something similar to the attached should accomplish what "I understand" your flow diagram to require.

@RonitSSS I agree with @efarley the best approach would be State Machine actions.  That way it can be sent back to the end user if it’s rejected during first or second approval. Let me know if you need additional details.

Is governance approval is a action? Is it freely available in nintex..

Yes, @RonitSSS it is a flexi task action, that I named governance approval, because that was the task for our governance team to approve the item.  Flexi tasks can accomplish any type of task you require.  Mine was sent to a member of our governance team for the purpose of reviewing and approving the item.

@RonitSSS what wierd text are you talking about?  Is it similar to this?

That string is necessary for Nintex to link the reply back to your workflow task, and must remain in the subject line for lazy approval to work.

If you are talking about something else, please give more information.