[EPIC] More Data in the `nextAbility` function

[howlowck]

Description: nextAbility is currently a simple function that has no parameters. However in order of this function to be useful, it needs information like the slotData, convoState, etc.

The difficulty comes from the fact that convoState is changed after the execute stage, we would either have to run the nextAbility function right after when onComplete function is run in the execute Stage, or create a new stage after the execute stage to run the nextAbility Function.

Acceptance Criteria:

• nextAbility has conversationState and the getSlotData function.