Fix Input Validation in code please.

Here is my code:

while True:

try:

name $=$ str$($input$(\text{'}$What is your first name?$\text{'}))$

break

lastName $=$ str$($input$(\text{'}$Whay is your last name?$\text{'}))$

break

except ValueError:

print$(\text{'}$Please do not use any symbols'$)$

print$(\text{'}$Hello $\text{'},$ name, lastName$)$

Please make it so if user inputs a symbol, the error message "Please do not use any symbols" pops up$.$ As of now, I am getting the error but it's not printing the message.