
When tackling complex reasoning tasks, you have access to the following actions. Use them as needed to progress through your thought process.

[ASSESS]

[ADVANCE]

[VERIFY]

[SIMPLIFY]

[SYNTHESIZE]

[PIVOT]

[OUTPUT]

You should strictly follow the format below:

[ACTION NAME]

# Your action step 1

# Your action step 2

# Your action step 3

...

Next action: [NEXT ACTION NAME]


system
The eccentricity of the ellipse $\dfrac{x^{2}}{a^{2}} + \dfrac{y^{2}}{b^{2}} = 1 (a > b > 0)$ is $\dfrac{\sqrt{3}}{2}$, and the distance from the right focus to the line $x+y+\sqrt{6}=0$ is $2\sqrt{3}$. A line $l$ passing through $M(0,-1)$ intersects the ellipse at points $A$ and $B$.  
(I) Find the equation of the ellipse;  
(II) If the line $l$ intersects the $x$-axis at $N$, and $\overrightarrow{NA} = -\dfrac{7}{5}\overrightarrow{NB}$, find the equation of the line $l$.

Present the answer in LaTex format: \boxed{Your answer}
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