Without knowing the rules of that airline with regard to companion upgrades, and Simply Good Business (I must say that some of your examples look familiar...)
1. C or E (depends who asked first, the company gets something positive out of both; Depending on any waitlist priority, I might not have a choice).
2. A
3. B (Is it your job to pass this to a supervisor unless the customer asks to speak to one?)
4. B
[This message has been edited by james (edited 02-26-2001).]