well first of all i hope ur dad will get well soon. Well, ur dad is a very responsible guy, so definately he'll try to finish his job in any circumstances. as for dinner, dun ask me coz my parents hate me to bring them to some fancy restaurants, always blame me for wasting unnecessary money.
Actually there's nth much u can do when someone's down, sad, blablabla...being a listener actually helps alot. When i had my problems last time, all i need is someone to listen. But one thing i can say, why not try turning the situation around. Now ur the one havin problems, and think what actually you want from others?? then u'll roughly know how to comfort other ppl. But of course its different for each individual and for different situation.
Haha, i sound like a pro but no la i was just crapping alot.