class Dragon
  attr_reader :location
  attr_accessor :name

  def initialize(name)
    @name, @location = name, 'Far far away'
  end

  def fly_to(location)
    @location = location
    puts "Dragon #{@name} fly to #{@location}"
    self
  end

  def walk_to(location)
    @location = location
    puts "Dragon #{@name} walk to #{@location}"
    self
  end
end

x = Dragon.new 'Petr'

puts "Dragon's name is #{x.name} and his location is #{x.location}"
x.fly_to 'Moscow'
puts "Dragon's name is #{x.name} and his location is #{x.location}"
x.walk_to 'Piter'
puts "Dragon's name is #{x.name} and his location is #{x.location}"
x.name = 'Wall-e'
puts "Dragon's name is #{x.name} and his location is #{x.location}"