Hi, I found a multi-city itinerary PIT to PHL to SFO on 3/5/15 that was cheaper than one-way PIT to SFO. The site keeps telling me that the price changed since I clicked (up $50, from O to Q), yet I can search again and find this price. Any way to actually book this? I called and was told the fare is supposedly gone now, but it can still be searched.