I'm flying today for 8 hours....alone with my 15 y/o sister. i'm only 14. i'm scared :/ ?

i'm not scared of the actual flying part. i've flown before. but i've seen the movies and read the books. people get kidnapped at airports. i read this book where this guy put something in the girls coffee and she was so out of it that she followed him to put a wig on and different clothes and then she went on a different plane with him to australia where he kept here in his completely secluded house for like a year. she was only 2 years older than me. and the movie Taken. two friends going to a different country....two sisters going to TEXAS i mean things happen in texas. i see the news. help! i'm super scared :/