
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 universal set $U=\mathbb{R}$, set $A=\left\{-1,0,1,2,3\right\}$, and set $B=\left\{x|x\geqslant 2\right\}$, find the intersection of set $A$ and the complement of set $B$ in $U$, denoted as $A\cap {C}_{U}B$.

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