I am confused about what is an appropriate response to dhanyawad, thank you, in Hindi. I found some sources saying koi baat nahi is an appropriate response, which is sort of like saying "no problem" or "don't mention it." When I was talking to an Indian customer at my job, she acted like this wasn't an appropriate response when I used "koi baat nahi" after she said "dhanyawad." She said an appropriate response would be to just say "dhanyawad" back, which I have never heard before. Are my sources inaccurate, or does it just depend on the area of India you are talking about?