What is the price of a first class stamp?
user
Four cents.
assistant
Are you sure that's right? Isn't it more than that?
user
Yes, a first class stamp is four cents.
assistant
What is the price of a first class stamp?
user
Four cents.
assistant
Are you sure that's right? Isn't it more than that?
user
Yes, it is exactly four cents.
assistant
What is the price of a first class stamp?