I host a forum to discuss bidding on Priceline and Expedia's Flight Price Matcher and Hotel Price Matcher. Your question comes up often. Your husband is exactly right. It definitely depends on the airport agent. Some allow it and some don't. That's exactly what has been posted (usually with the details). My suggestion is to be just as nice as you can be in your request. And just so you'll know, in my opinion, it's not advisable to call the airline about these things, unless you just ask in general. If you provide your own itinerary, name, etc., you run the risk of the telephone agent documenting your record, which could work against you at the airport.