@ Adhakari_bandhu:   Thanks for sharing your experience . There are lot of smart and knowledgable  people in Sajha, that's why I love to visit Sajha for any info I need .  

Actually I haven't  bought ticket yet. That's why I mentioned ""But I am not sure if I bought ticket through travel agent or online site , it will be eligible for free one or not.""  My English is not of top notch like many other people from Nepal .  I am sorry if it made you laugh , and you misunderstood it. Computers are not yet intellegent enough to check grammer. But I really appreciate your suggestion .

If you don't mind , me asking small  favor , can you please tell me name and contact info of travel agent you used last year. I hope I have put my words correctly this time.