"Am" is the first person singular ("I") conjugation [present tense] of "to have"; "ai" is for the second person singular ("you").
Why does it end in -le? I thought that "the" was -ul or -a? Is it just an irregular noun with its own endings?
Maibe this article can help you: https://gramaticalimbiiromane.ro/morfologia/parti-vorbire-flexibile/articolul/articolul-hotarat/
'Eu nu am' is i do not have.. and 'tu ai un' ..you have..might be the difference here. It is all a matter of context here between me and you though.
I am not sure. But I think the statement means literally I do not have THE milk nor THE tea, as opposed to I have got no milk nor tea. Hopefully someone that knows better will clarify this for all of us. It is fascinating to learn all this, isn't it?
It is a weird sentence. May be used when you ask for a drink, the waiter forgot to give you the drink and you forgot what is the drink you asked for