Automated Text message and Calendar integration

working on a simple Text-message and Calendar integration for our tennis group 1. Person texts a pre-defined number; response text should show 3 available day/time slots from a pre-defined Google calender 2. ask the person to press a number (1,2 or 3) to select an option, {or ask to enter HH:MM AM/PM} (none-available or other edge-cases can be addressed later) 3. Update the G calendar with person`s name and phone number and the selected slot 4. send a confirmation to the person 24 hours before the event source of text: Whatsapp or iPhone text message (via iMessage) or Android text message (via Android Messaging) or Flip phone text messaging (older demographics) Any help on how to create above integration and what low-code tools to use will be much appreciated!