Represent the dialog for retrieving similar scenarios Speaker2: have you seen Harry today?
Speaker4: at the canteen at lunchtime 
Speaker1: me too, we ate together
Speaker2: and later?
Speaker3: he left the building about 30min ago
Speaker3: told me he was going to get his hair cut
Speaker2: damn it! the system has just collapsed, we need him
Speaker3: so it must wait I guess
Represent the dialog scenario for retrieval Speaker4 and Speaker1 had lunch with Harry today at the canteen. He left 30 minutes ago to go to the hairdresser, as Speaker3 reports. The system just collapsed and Speaker2 needs Harry's help.
Represent the dialog scenario for retrieval Speaker2 will refill the hand sanitizer on Speaker1's request.