instruction: Go to HelloTalk app & start the chat with Simone by sending hello message

previous_actions: 

active_application: HelloTalk

screen_description: windows {
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    bottom: 136
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  id: 7
  layer: 1
  window_type: TYPE_SYSTEM
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      text: "12:30"
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}
windows {
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    bottom: 2400
  }
  id: 1612
  title: "HelloTalk"
  window_type: TYPE_APPLICATION
  is_active: true
  is_focused: true
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      depth: 5
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      }
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    }
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      class_name: "android.widget.ImageView"
      is_clickable: true
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    }
    nodes {
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        top: 154
        right: 452
        bottom: 233
      }
      class_name: "android.view.View"
      content_description: "Italiano"
      is_clickable: true
      is_focusable: true
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    }
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      is_focusable: true
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        right: 270
        bottom: 351
      }
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      is_clickable: true
      is_focusable: true
      is_selected: true
      depth: 13
    }
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        top: 252
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      }
      class_name: "android.view.View"
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      is_focusable: true
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      is_focusable: true
      depth: 13
    }
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      }
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      is_clickable: true
      is_focusable: true
      depth: 13
    }
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      is_scrollable: true
      depth: 17
    }
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        right: 1080
        bottom: 905
      }
      class_name: "android.view.View"
      content_description: "Recently viewed"
      is_focusable: true
      depth: 18
    }
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        bottom: 937
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    }
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      }
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      class_name: "android.view.View"
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      depth: 21
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      is_clickable: true
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      class_name: "android.widget.ImageView"
      content_description: "School 1\n0/17"
      is_clickable: true
      is_focusable: true
      depth: 21
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      class_name: "android.widget.ImageView"
      content_description: "Italian Sounds 1\n0/20"
      is_clickable: true
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      class_name: "android.widget.ImageView"
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      class_name: "android.widget.ImageView"
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      class_name: "android.widget.ImageView"
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}


assistant: !FUNCTIONCALL{"name": "navigate_back", "parameters": {}}