The word Danke is used as an informal way of saying 'thank you' in German. The informal reply, ('you're welcome') is bitte.
The most common formal ways of saying 'thank you' are Dankeschön or Danke sehr but these can also mean thanks a lot or thank you very much. More formal replies that go with Dankeschön or Danke sehr are Bitteschön or Bitte sehr.
The word Bitte may also mean:
'MayI help you?'
- (Waiter approaches table) Bitte?
'Pardon?' (as in 'Could you repeat that?')
- Ich bin heute einkaufen gegangen. (I went shopping today.)
- Wie bitte? (Pardon me?)
or 'Here you go' (when handing something over)
- Ein Stück Apfelkuchen bitte. (A piece of apple cake please.)
- (Waiter serves the cake ) Bitte sehr.