@startuml actor ユーザー as user participant Alexa as alexa user -> alexa : アレクサ、ツイッターで△△△ってつぶやいて alexa -> user : △△△とつぶやいていいですか？ alt Yes user -> alexa : はい alexa -> user : △△△とつぶやきました else No user -> alexa : いいえ alexa -> user : はい、やめます end @enduml Submit amiga aws-orange black-knight bluegray blueprint cerulean-outline cerulean crt-amber crt-green cyborg-outline cyborg hacker lightgray mars materia-outline materia metal mimeograph minty plain reddress-darkblue reddress-darkgreen reddress-darkorange reddress-darkred reddress-lightblue reddress-lightgreen reddress-lightorange reddress-lightred sandstone silver sketchy-outline sketchy spacelab spacelab-white superhero-outline superhero toy united vibrant       🎉 Discover the future PlantUML Web Editor! 🚀  PNG  SVG  ASCII Art