<PR>check_tickets<PRAN>status<PRAV>unavailable<C><U>"Hello.How can I help you?"<A>Oh,Hello.I'd like to buy two students tickets for the Harry Potter.<U>OK.what time do you want to see?<PN>check_tickets<PAN>name.movie<PAV>Harry Potter<PAN>num.tickets<PAV>two students<PAN>time.preference<PAV>8.30<PAN>date.showing<PAV>Today<PAN>seating<PAV>any
Today 8.30
Today 8.30