SLA how to integrate Service profile and Transaction type

Hi Experts,

We have implemented Service Desk for our client, the current requirement is to implement the SLA based on Priority. We have created Service profile with all response time, priority and available time. Also we have created Transaction type for SLA. How to integrate the service profile with Transaction type so that the service message belongs to the defined transaction type will pick the response time based on priority from the Service profile.

Please guide us on this. Thanks in advance.