Dialogflow for a chatbot to retrieve coupons

Hello, I need to configure a Dialogflow bot to retrieve and send coupons that will make the following: 1) It will receive a code in a line of text or a QR image beside a user ID that can be a phone number, a name, a string or FB ID. 1.1) In case it gets a QR image instead of a line of text it should decode it to retrieve the code in the line of text. 2) The bot will open a MySQL database and find the coupon that matches the code that was fed. 3) Once it find the matching coupon, it will return 4 things that are going to be found in the MySQL database. Those things are: 1) Title of the coupon 2) Text description of the coupon 3) Image of the coupon 4) a secondary image 4) Before it closes all processes, it must log who asked for the coupon and save it in a log database the ID of the user, the ID source (FB in case of FB ID, WhatsApp in case of phone number or name/ID# in case of form) and the date 5) After sending the coupon, Dialogflow will send a new message asking to complete user information, we need 4 things: Name, ID#, telephone number and email 6) Dialogflow should fetch the answers and complete the user profile with whichever info was returned and log the date Dialogflow will work with the system [login to view URL] that is a help desk that already manages WhatsApp and Messenger and also is ready for connectivity with Dialogflow to be used as a chatbot for the helpdesk We also have the coupon database. Thanks!