ASterisk-CHAT conference room

Description I need a conference application (made with asterisk, elastix or any other) which would do the following 1) the end user calls an specific number in the PSTN 2) PSTN forward the call to the asterisk/elastix box 3) a voice MENU informs the caller that he needs to choose for for SEX, ROMANCE, any other chat room (this may vary) 4) based on that, he is forwarded to the specific chat room 5) the idea is to keep the user on line the longest time possible 6) any additional idea from your part will be considered 7) the messages and menu should be in spanish, but i think that won´t be a problem 8) hardware dimensioning and recommendation is necessary Budget is US$400 thxs