I was attending a telephonic interview for the post of software developer for a reputed product MNC, and my interviewer asked me:

How are you? To which i answered, - "Thanks i am fine" then i asked "how about you ?"

When the interview ended, he told me - "It was a pleasure talking to you" to which i answered - "it was nice talking to you too as well"

Do you think it's okay in both the cases? Or should we not, since it's an interview or did i act over-smart?.