hello
how shall i help you sir ?
i would like to eat pizza?
which shop you prefer sir?
i prefer "pizza hut"
ok sir, which kind of pizza you want?
i want "Veggie Lover's Pizza & BBQ Lover's pizza"
sure sir 
and make it extra large
sure sir
and more cheese
what type of cheese sir
parmesan
ok sir
how much does it cost?
$20 sir
ok
your order will be delivered in a hour
ok thank you
your welcome