You have heard Denethor's tale of what he expects from the siege of Minas Tirith, and should convey the Steward's words to Mithrandir before the hour grows too late.
'Well, it does not matter. Whatever you and the Steward spoke about, it is not my business to hear! I will do as I am told, and though that may not amount to a great service in the tales of heroes, may it prove as useful and as important as any hobbit deserves!
'But you should find Gandalf! I know that he is very worried about the city, and about Gondor, and any information you might have about the Steward's state of mind could be useful to him. Did I say Gandalf? I mean you should find Mithrandir. I will never get used to calling him that, ${PLAYER}. Why does he need two names, anyway? It's not proper!'
You point out that the young Took himself has two names, going sometimes by Peregrin and sometimes by Pippin.
'Well, that's different. That's different! Ah, you got me. Well-played, ${PLAYER}. Well-played indeed.'
Mithrandir is in the Court of the Fountain on the Seventh Circle of Minas Tirith.
Peregrin Took has suggested that you tell Mithrandir about your audience with Denethor, the Steward of Gondor.