The way you said it there to an elderly lady I would yes it is.
The easy way to get round this is to wear headphones (with the sound off if you like) and, if someone still talks to you then give a quick answer to the first question and say "sorry is it alright if I listen to my music" or something like that if they keep going.
You need to be apologetic with something like this if you want to avoid seeming rude. It isn't really fair but social rules are biased towards extroverts so refusing to talk is considered dismissive but striking up conversation with a stranger isn't usually considered intrusive (even though it might feel that way).
The easy way to get round this is to wear headphones (with the sound off if you like) and, if someone still talks to you then give a quick answer to the first question and say "sorry is it alright if I listen to my music" or something like that if they keep going.
You need to be apologetic with something like this if you want to avoid seeming rude. It isn't really fair but social rules are biased towards extroverts so refusing to talk is considered dismissive but striking up conversation with a stranger isn't usually considered intrusive (even though it might feel that way).