
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
Given the polar equation of curve $C$ is $\rho=2\sin \theta$, and the parametric equation of line $l$ is $\begin{cases} x=- \dfrac {3}{5}t+2 \\ y= \dfrac {4}{5}t\end{cases}$ (where $t$ is the parameter).  
$(1)$ Convert the polar equation of curve $C$ into a Cartesian coordinate equation;  
$(2)$ Let the intersection of line $l$ and the $x$-axis be point $M$, and let $N$ be a moving point on curve $C$. Find the maximum value of $|MN|$.

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