I am trying to book the following trip in business class and there is availability in all segments as per expert flyer and united.com: Sep 10 LH761 DEL-FRA Sep 10 LH444 FRA-ATL (4.5 hour connection) Nov 29 LH439 DFW-FRA (Open jaw) Nov 30 LH104 FRA-MUC (3 hour connection) Dec 04 LH762 MUC-DEL (Stopover) As per my understanding of the routing rules 1 Open jaw and 1 Stopover should be permissible on United RT Award tickets but the UA agent is unable to price it. What am I doing wrong? Also wanted to know, does United allow change of dates once an award ticket is purchased and can award tickets be put on hold for a day. (no routing change or passenger name change). A slightly unrelated question: I was initially trying to book the first 2 segments using Avianca Lifemiles and last 3 segments using United miles because a while back I got sucked into purchasing Lifemiles at 1.5 cents / miles but later realized it is not of as much value as I originally thought so wanted to burn them first however the United return was not bookable because apparently United does not allow stopovers on one way tickets which I didn't know. Now I am stuck with even more miles so if there are any creative ideas on how to use a combination of Avianca and United miles that would be even better. Any guidance you can provide would be highly appreciated.