It looks like I may be going to Dhaka (DAC) in June or July on what I hope will be a C fare. If I am in paid C, it seems as if I need to take 3 flights from IAD to get there. The transatlantic flight will be on UA (since it is paid by the US govt). What advice on the second flight FRA-DUB. How do LH C and Emirates C compare (Emirates doesn't seem to have flat beds--I don't know whether LH will have them on this route)? And do I get any fare bonus for MP on either LH or Emirates (or do I need to ask UA or the UA forum)? [The third flight will have to be on Emirates unless I go out of the UA system, which I don't want to do.]

Thanks much.