Design a bot's first user interaction
First impressions matter
Language versus menus
Consider the following two designs:
Starting the bot with an open-ended question such as "How can I help you?" is generally not recommended. If your bot has a hundred different things it can do, chances are users won’t be able to guess most of them. Your bot didn’t tell them what it can do, so how can they possibly know?
Menus provide a simple solution to that problem. First, by listing the available options, your bot is conveying its capabilities to the user. Second, menus spare the user from having to type too much, instead they can just click. Finally, the use of menus can significantly simplify your natural language models by narrowing the scope of input that the bot could receive from the user.
Menus are a valuable tool when designing bots for a great user experience; don’t dismiss them as not being "smart enough." You can design your bot to use menus while still supporting free form input. If a user responds to the initial menu by typing rather than selecting a menu option, your bot could attempt to parse the user's text input.
Alternatively, you can ask more pointed questions to lead the user if the bot has a specific function. For example, if your bot is responsible for taking sandwich orders, your first interaction could be "Hi! I'm here to take your sandwich order. What kind of bread would you like? We have white, wheat, or rye." That way, the user knows how to respond and is given navigational cues through the conversation.
If your bot collects personal data from the user, it's important to convey that and to describe what will be done with the data.
Now that you're familiar with some basic principles for designing the first interaction between user and bot, learn more about designing the flow of conversation.