A call is processed in a public switched telephone network (PSTN), in accordance with at least one advanced intelligent network (AIN) telephony service associated with one of a calling party number and a called party number. The call is initially connected to a voice markup language platform in response to preliminary routing instructions from a service control point, in accordance with the telephony service. Data relating to the telephony service is retrieved and at least one caller query is formulated based on the retrieved data. The caller query is verbally provided to the calling party. Additional data is then received through voice communication from the calling party, including a response to the caller query. The call is routed in accordance with the additional data provided by the caller.