Setting context for slot prompt

I am not that familiar with the slot functionality in conversation, so while I tried implement that in our conversation I got stuck because of not getting some possibility that was previously there. Below are my requirements
1. To pass a context variable to my application if a prompt question is asked in the slot.
In my slot I have added a prompt for @sys-date, if @sys-date is not there we will ask for a date, at this time I have to set a context and return to my application. Can i do this?
![alt text][1]
2. Only after getting the response for all the checks I need to jump to the next node. How can I handle this?

[1]: /answers/storage/temp/15847-2017-06-29-1631.png

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