browser extention or script to book an appointment auto

1- Login: i can do them manually , 2- The script must select an available "blue" time, on a calendar. copy the Image Captcha And Confirme the pop-up that shows up This part must be very very very fast (a lot of people and maybe other programs try the same job). This operation must be done at a specific time, only at that time calendar is available. Re-login to the accounts automatically if the website disconnected us .The script must be programmed in a language that is not detected as a programme but as a human.