Use the Human Orphan Whistle to talk with the child you will be looking after during Children's Week.
You're willing to help us here at the orphanage? Bless you, friend; your aid during Children's Week will be invaluable.
Take this whistle. You will only be able to use it for a short amount of time - typically not longer than Children's Week itself. When you use it, you will be able to talk with the child you've agreed to look after. Using it again will dismiss the child.
By all means <name> - use the whistle and meet your ward! I'm sure the child will be most eager to meet you.
Um... hi. My name is Randis, and I guess you're looking after me? You're an adventurer, like my mom and dad were. I'm happy to meet you.
I hope we'll have a lot of fun together. I have some things I'd like to do, and the matron says you'll be like a big $gbrother:sister; to me during this week. I'd like that a whole bunch, yes $gsir:lady;.