Asterisk, FreeSwitch work

I have a website and I require a feature to be implemented to the website where users can use some of the website features by calling into a number. The feature I require involves the user be able to communicate with the website by calling in. The user may perform duties such as log in to their account by dial pad, check in to an event, and check out, etc. Example: System: *Welcome message* enter your account number -user dials account number System: Enter your password -user dials password System: To check in press 1, to check out press 2 -user Dials 1 to check in I need asterisk expert or freeswitch to work on system to be configured to route and handle the incoming calls based on defined parameters.