Can I help you , sir ?   I'm here for the backpack you announced several minutes ago .   OK , take a seat please , sir . First of all , can you show me your ID please ?   Sure . Here you are .   OK , could you please tell me what your backpack looks like ?   Of course , it's a soft leather one , you know , not a sports one that looks childish .   Mmm ... does it zip closed ?   No , it's straps closed , and it has a buckle in the front .   OK , can you tell me the distinguishing features of this backpack ?   Oh , yeah , the brand name .   So what's it , sir ? 