To converse on the phone it depends if it is for business or you are ringing a friend.
Foe Business: You say, 'Goodmorning/afternoon , my name's Mr Kloth, may I speak to Mr Smith?'
They reply, 'Hold the line I'll put you through'.
you say, 'Thanks very much, I'll hold''
Ringing a friend[ if some else answers ] 'Hi this is Kloth, I'd like to speak to Jane please. Can you put her on for me? Thanks'