28101
I get it that ありがとう means "thanks", is informal without the ございます added to it
and so on.  
However, I do not know what I should say after someone thanked me. In English,
you generally say something like "No problem" or "You're welcome", it is
similar in German as well.  
But what do you say in Japanese?
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2015-09-18T10:47:44.903
28093
2015-09-20T10:24:15.913
2015-09-20T10:24:15.913
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question
politeness
How to respond to ありがとう?
"Ie ie", literally "no no" is the same as "no problem" in this context.
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2015-09-18T12:07:24.127
28095
2015-09-18T12:07:24.127
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answer
`いえいえ` is an informal way to respond to `ありがとう`; similar to saying "No
problem" or "Don't mention it."

`どういたしまして` means "You're welcome" and is more polite/formal.
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2015-09-18T19:50:26.043
28101
2015-09-18T19:50:26.043
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answer