Electric vehicles (EVs) require charge stops during long trips. Appropriate digital services can ease the usage of EVs and thus could accelerate their adoption. We propose a planning system that interacts with the user's calendar for deriving upcoming journeys. The core of the system is a newly developed itinerary planning algorithm that integrates charge stop planning. The algorithm uses dynamic information distributed between different stakeholders, namely information regarding charging infrastructure and navigational information. A simulation of distinct EV scenarios validates the efficacy of the proposed work.