Help Finding Flights

I am looking for some flight numbers and some flight times for my first ever airplane trip. What I know is that I took Comair the entire trip, if memory serves me correct. I left on June 12, 2003 DAY-CVG-COS (probably the first flights that would allow this) and returned June 21, 2003 COS-CVG-DAY (Probably the last trip that allows this). When I went onto, it told me there was no data. There is a slight possibility that it could be another airline (Atlantic Coast Airlines) but I doubt it. All the flights were on Regional Jets. Thanks in advance.