Originally Posted by
IAH-OIL-TRASH
Seems like miscommunication and the agent is trying to change (re-book) the entire ticket to include NH flight number in E class. You just want to ask for the UA codeshare # to be changed to the native NH flight number # on the current ticket - that will cause A to go to E by itself.
Does E space exist in NH inventory on the target flight? That could also be the problem with the pricing (though $3k more sounds like that may not be the case here). With LH one can't change the flight number unless space exists in the pr

per fare bucket.