Originally Posted by
twoaisleplane
In fairness to the OP, if the agent is unfamilar with the term "ps", they are also unlikely to offer him/her the fee-free change of flights which United seems to offer (to some!) in this situation. They'd probably just respond as they would to any other customer looking to change flights by quoting change fees, increase in fare, etc.
Good point. The dreaded 30 minute hold for supervisor . . .