user_turns: hi i'd like to book a table at resto_hanoi_expensive_thai_4stars may i have the phone number of the restaurant
system_turns: hello what can i help you with today great let me do the reservation here it is resto_hanoi_expensive_thai_4stars_phone
kb_facts: 1 resto_hanoi_expensive_thai_4stars R_phone resto_hanoi_expensive_thai_4stars_phone 2 resto_hanoi_expensive_thai_4stars R_cuisine thai 3 resto_hanoi_expensive_thai_4stars R_address resto_hanoi_expensive_thai_4stars_address 4 resto_hanoi_expensive_thai_4stars R_location hanoi 5 resto_hanoi_expensive_thai_4stars R_number four 6 resto_hanoi_expensive_thai_4stars R_price expensive 7 resto_hanoi_expensive_thai_4stars R_rating 4