python function not returning the full name, it returns "Q Filio!" why is that?

def get_formatted_name(first_name, last_name):
    """---"""
    full_name = first_name + ' ' + last_name
    return full_name.title()

while True:
    print('\nPlease tell me your name:')
    print("(enter 'q' at any time to quit)")

    f_name = input('First name: ')
    if f_name == 'q':
            break

    l_name = input('Last name : ')
    if l_name == 'q':
            break

formatted_name = get_formatted_name(f_name, l_name)
print("\nHello, " + formatted_name + '!')