Hi Nilanjan. Since, only diplomas are available for photography and no full fledged UG course is available for photography, I will suggest that you should opt Journalism and Mass Communication as your stream. This is because the wide range of subjects in this course would help you boost your confidence and will make you familiar with all the things that you need to acquire for becoming a travel photojournalist or travel show host. BJMC or similar course would polish your personality in a better way and would open many more related careers which might interest you and you are currently unaware of.

Dear Nilajan, you should start with a Bachelor's degree in Journalism, Visual Communications or Photography. You should have technical skills like photo editing, photographic techniques, reporting, writing and proof reading. Your professional profile is what will land you offers with the companies that you have mentioned. And that doesn't happen overnight. Your work should speak volumes for you. If you want to be noticed, your work should be amazing. With DSLR Cameras and selfies everywhere, you need more than ordinary skills to flourish in this sector. And not forgetting to mention, your communication skills should be amazing. You should have good listening skills, multi tasking abilities, sense of humour and spontaenity. For being a host, you need to have command of the subject that you want to host about and the geographical stature. You should also be good at the local language to make it feel real.