Dialogflow ChatBot Developer

Hi,

In my company, I need to make chat bot with dialog flow.

- -- Simple Senario Of the Chat bot --

- Hello ( Customer)
- Hello
- How much are tote bags ?
- Tote bags are available in different fabric types and sizes. Our prices vary according to the number of products. Can I learn the fabric type and size you want. Also how many cloth bags would you like?
-Can I get the price of 140gr material, 1000 pieces of 35x40cm bags?
- The unit price of, 140gr 35x40cm for 1000pices is 3,25$

This is a simple price query dialog.

I have a price table with excel and from this table, I want to show the prices to the customer according to the query.

Please apply with references about dialog from.