Booking Web App For Firebase Hosting With Firebase Firestore and Node.js

I want a Booking Web App My Chatbot will be integrated with it. My Chatbot can be integrated with JSON API So, i will send from the Chatbot the following values Full Name Reason Phone Email userID enterpriseID Facebook Profile Photo URL Ok, so, this data will be send it to JSON API and the user will be redirected to the Booking Web App. Where the user is going to select one date. After selected the date, 1 menu of the hours availables will be indicate to the user, the user can select one hour. After that, 1 message of confirmation will say the info about the appointment, if the user confirm the appointment will be created and it will be saved into Firebase firestore with all the values that the user gave from the chatbot before. The user can show information about his appointment if he join to the booking web app with his User ID, if the user id has already one appointment he will see the info about his appointment and he cant show the calendar because he have one appointment already. The user can cancel his appointment and writte the reason of why its doing it. The user can see if the doctor had canceled his appointment and the reason of that. The user have a limit date for cancel his date. After that date, he can't cancel. I want a pretty and clean interface, nothing of the standart little calendar used from the 2000. More details in [Removed by Freelancer.com Admin - please see Section 13 of our Terms and Conditions] i will share screen. You can use Angular.js or other of you preference.