The Input node asks the end-user for information that they must enter as text input (e.g. words, dates, numbers). This user input is then saved as a variable that can be referred to in other nodes in your flow.
If you require the input to be in a specific format (e.g. a date), remember to guide the user by specifying the required format. To enable a user to cancel their current action and return to a defined step, you can specify the input that will cause the cancellation as well as the cancellation message that will be displayed to the user.