Hi ... I wasn't sure the ramifications for my change that I had in mind. Currently I'm booked on LAX - ORD - LGA LGA - DFW - SJC SJC - LAX I would like to change SJC - LAX to be one day later and from SFO. The Change fee + Fare difference makes the change $179.00 However If I just booked SFO - LAX it would be $69.00. If I don't show up for the SJC - LAX ... would anything negative happen?