Creating a chatbot for customer service – customers inquiries

Good day everyone,

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I have an idea of a personal project but I don’t know where to start from.

My idea is to create a chat boat that can be integrated on my website or (telegram bot , wechatbot, whatsapp bot,… I didn’t decide yet)

I do arrange and deliver orders for clients, so usually customers would call and ask if their orders has departed. I have the data of the departed shipments in a spreadsheet that probably can be connected to a chat bot that would ask the client for the delivery reference number, do a search in the spreadsheet and return the search result in the chat for the customer.

Is there anyway that this can be done ? I have seen some paid services, but as a start i would like something that can be done free of charge as am not sure if customers would find it convenient or not.

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Thanks in advance.