A method and computer program product for receiving a slot request, from a second respondent having a second seniority level, for an original event slot that was previously reserved by a first respondent having a first seniority level. The second seniority level is compared to the first seniority level. If the second seniority level exceeds the first seniority level: the reservation of the original event slot by the first respondent is cancelled, and the event slot request for the original event slot by the second respondent is accepted.