  Quantum computing is a growing field that promises many real-world
applications such as quantum cryptography or quantum finance. The number of
people able to use quantum computing is however still very small. This
limitation comes from the difficulty to understand the concepts and to know how
to start coding. Therefore, there is a need for tools that can assist
non-expert in overcoming this complexity. One possibility would be to use
existing conversational agents. Unfortunately ChatGPT and other Large-Language
Models produce inaccurate results. This article presents C4Q, a chatbot that
answers accurately basic questions and guides users when trying to code quantum
programs. Contrary to other approaches C4Q uses a pre-trained large language
model only to discover and classify user requests. It then generates an
accurate answer using an own engine. Thanks to this architectural design, C4Q's
answers are always correct, and thus C4Q can become a support tool that makes
quantum computing more available to non-experts.
