can anyone help me to create a program that alows me to make a regular conversation with the computer?
If anyone can, they should contact the Turing Award committee immediately...
Seriously, this isn't anything even remotely trivial. Even a program like an ELIZA-class chatterbot is a sizable project, if you mean to have give it a significant 'phrasebook'. One that can accept a large number of varied inputs, such as Apple's Siri, is something that would take years for both programming and preparing the phrasebook. Even then, it is only a simulation of a real conversation, and tripping it up isn't difficult.
Creating a real, responsively conversational program would probably require solving the hard AI problem - that is to say, it would actually have to be a self-aware, sentient program - which is an ongoing research topic and may not even be possible.
FWIW, George developed the first PC touch tablet in the early 1980's, and hired me to write drivers and tutorial software to help developers use it. I developed the anti-bounce algorithms that are (I think) still in use in current touch pads as a work-for-hire for his company in the Silicon Valley. That was 1984 (a hat-tip to George Orwell!).
You can just talk to me instead , Its much easier than writing the code you know .
The fact is , Its not possible (yet?) , people tried that since 50's , a computer is that good to defeat the world chess champion (with very limited resources at the time) , but Its not that good to speak with you in a way you don't figure out Its a machine .
Something to think about :
you say hello , computer says hello
you say hello again , comeputer gives you something from Its limited responses , while a human might ask you if you're going nuts (insane) ! (It also depends on his/hers personality)
you say hello again , the person might not even answer you , while the computer communicates using Its limited resources .
Are we ever able to make a program that can speak like a human ?