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 == United Airlines == 

 I was surfing through an online booking portal(makemytrip), and I found that there exists a flight Flight# UA 8897 flying directly from Bangalore to Frankfurt Main. It is also mentioned that the flight is operated by Lufthansa. Also, Lufthansa operates separate flights(its own) from BLR to FRA. I guess the United Airlines flights are operated by a codeshare agreement. If this is so, what is the convention followed with reference to codeshare flights?  • "