I can't compare a var with a string [duplicate]

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So, I need to compare the input with the desired string outcome. When I type in the input it proceeds to the comparison and displays an error message. The input has to be "yes". It shows on the line of the comparison [TheInput: not found

I have tried to type all kinds of inputs "yes", "no", numbers but, the error is always the same.

read  -p 'do you want to move these files to another dir?' answer
if [$answer -eq "yes"]; then
find . -type f -mtime +0 -size 1k -user markolosole -exec mv -t 
    dump/ {} +; 
fi

It shows on the line of the comparison [yes: not found where "yes" is the answer that I typed