$1337($or leet$)$ is an alternative alphabet used mostly on the internet that replaces certain letters with other characters, such as numbers. Write a program named leet$\_$speak.py that takes as input from the user a string of text, converts the words to leet, and prints the converted text. Your program must use a dictionary.

Use the following letter to number conversions in your program: a $>4,$ e $>3,$ o $>0,$ s $>5,$ t $>7$

Example output $($using input howdy aggies whoop$)$:

Enter some text: howdy aggies whoop In leet speak, "howdy aggies whoop" is: h$0$wdy $4$ggi$35$ wh$00$p