you (singlular) você vosseh – A formal way of addressing someone (in Brazil they use você informally as well).
o senhor oo senyor – lit. “the gentleman”
a senhora a senyora – lit. “the lady”
Note, the Portuguese generally speak more formally than the English, so although referring to someone as ’the lady’ or ’the gentleman’ would sound rather pompous to us, it is quite common in Portuguese.  Senhor/Senhora can also mean sir/madam, Mr/Mrs (‘Miss’ would be ‘a menina’, or ‘Senhorita’), or Lord/Lady.
I eu ayu
he ele ele - the first ’e’ is very close, almost like an English ’i’, whereas the second ’e’ is barely audible (so it sounds almost like you are saying ’ill’).
she ela ela
’Com licen?a’ is often said as a parting formality – for example, as a polite way to end a telephone conversation.  The word ’ent?o’ is a very useful word for linking to a new subject without appearing too abrupt.