Closing a program

[oldDog]

Have been trying to learn about dictionaries in Python 3 at Understanding Dictionaries in Python 3

# Define original dictionary
usernames = {'Sammy': 'sammy-shark', 'Jamie': 'mantisshrimp54'}

# Set up while loop to iterate
while True:

    # Request user to enter a usernames
    print('Enter a name:')

    # Assign to name variable
    name = input()

    # Check whether name is in the dictionary and print feedback
    if name in usernames:
        print(usernames[name] + ' is the name of ' + name)

    # If the name is not in the dictionary...
    else:

        #provide feedback
        print('I don\'t have ' + name + '\'s username, what is it?')

        # Take in a new username for the associated username
        username = input()

        # Assign username value to name key
        usernames[name] = usernames

        # Print feedback that the data was updated
        print('Data updated.')

But when i try to close the program using Ctrl + C i get the following error:

^CTraceback (most recent call last)
   File "/home/oldDog/usernames.py", line 13, in <module>
     name = input()
KeyboardInterrupt

Could someone help me please