If it is too far, or you are really busy, just write them a email say: Although I appreciate you arranged the interview for me,I will not be available for the interview at Saturday.
Otherwiese, go for it. You will gain experience.
If it is too far, or you are really busy, just write them a email say: Although I appreciate you arranged the interview for me,I will not be available for the interview at Saturday.
Otherwiese, go for it. You will gain experience.