Filling multiple slots at the same time with FormAction and dynamic buttons in template?

Rasa Open Source
2

The FormAction will only requests slots which haven’t already been set. If a user says “I’d like a vegetarian Chinese restaurant for 8 people”, they won’t be asked about the cuisine and num_people slots. https://www.rasa.com/docs/core/slotfilling/#basics

Make sure, that your NLU is able to recognize “next week Monday” as time and “London” as location. Declare entities in your domain. If you got slots with the same name, they are automatically filled. Also take a look at this: https://www.rasa.com/docs/core/slotfilling/#custom-slot-mappings