Error! Error! A night at the movies

Would love some help with this question- totally stuck.

Where I’m at so far:

movies = {
StarWars: 4.8,
Divergent: 4.7

puts “What would you like to do?”
puts “Type ‘add’ to add a movie”
choice = gets.chomp

case choice
when “add”
puts “What movie would you like to add?”
title = gets.chomp
if movies[title.to_sym].nil?
puts “What rating does the movie have?”
rating = gets.chomp
puts “#{title} has been added with a rating of #{rating}.”
when “update”
puts “Updated!”
when “display”
puts “Movies!”
when “delete”
puts “Deleted!”
puts “Error!”