There are three ways you can communicate with Sophie.
By using the web chat version which can be accessed here. You can easily login by filling in your phone number and the SMS code which will be sent to your phone;
By using text message. If you don't have an internet connection, you can text Sophie at +31 6 35 78 45 78. This phone number is only connected to the internet, so it is not possible to call it.
It is not possible to call Sophie, but if you can’t type out a text (for example, while you’re driving), you can use your phone’s voice-to-text feature. If you don't know how this works, ask Sophie for an explanation.