I am looking for a restaurant. The restaurant should be in the centre and should serve persian food
I am sorry. There are no person food eateries in the centre. Would you like to find a different type of food? 
Yes, I am looking for a moderate price range.
I'm sorry, we have no persian restaurants in the centre.
What about modern european foods?
Riverside brasserie looks good. Would you like a reservation?
Yes, I want a reservation for 8 people at 16:00 on Sunday.
Sorry, the restaurant doesn't have any openings for that date and time.
ok. ill check latter
Alright. Have a good day.