Excuse me.Have you got any books on genetic engineering ? I've looked for them everywhere , but I can't find any .
neutral
user
I'm not sure if we've got any now.Books of that kind are on this shelf.Well , I'm afraid we've sold out .
neutral
assistant
What a pity ! I should have come earlier .
sadness
user
Come some time next week if you like . I think we'll have got some by them .
neutral
assistant