Techniques for creating a conversation tree are provided. In one technique, a user interface comprises an editor portion and a preview portion. The editor portion includes elements for creating and editing messages in the conversation tree. The preview portion includes a first message that comprises multiple buttons. Input is received, through the user interface, that selects a first button of the first message. In response to receiving the input, the preview portion to be updated to include a different set of messages. In a related technique, the preview portion includes a first message and a second message that is a child of the first message. Input is received, through the user interface, that selects the first message, causing the preview portion to be updated to exclude the second message and retain the first message, and causing the editor portion to be updated to include information about the first message.