I have a trip to Dayton Ohio next week (out of Harrisburg PA). On my return flight, I'd like to have an extended layover in Cleveland. Just by luck I saw on Expedia a Continental flight through Cleveland, but it was only for an hour. I'd like to meet a friend for dinner and catch a later flight.

Are there any websites that have that kind of search criteria, or do I have to call an agent?

TIA,
~Kar