Automated / fake live chat with pre-programmed answers.

I am looking for someone who can write me a script for a fake automated live chat on my website. Meaning that the user presses a button, the so called "live chat" appears where the user will be asking questions. Reality is, it does not matter what the user inputs, it needs to reply with a different but set sentence every time the user sends something. For example: Visitor: Hi! fake operator: Sentence 1 Visitor: alright how do I do that? fake operator: Sentence 2 Visitor: Great! thanks for the help! fake operator: Sentence 3 This chat will be used both on desktop and mobile platforms. It needs to be launched after the visitor presses a button. The design must be like facebook has, I have a color palette. I need to be able to alter the replies. Neat coding, I need to be able to understand it. URGENT PROJECT!