api to answer my LI messages

Hi, I need a small application that will automatically answers my LI messages with 2-3 options I mean to have the option when I open a LI message, to reply in the name of the sender different scenarios (2-3 options) by pushing a button or giving me the chance to write a non-standard message The api sends the message and then opens the next message and so on If this action can be stored in database will be an extra asset Thanks