context: USER says Hello, could you help me search for a place to dine in? SYSTEM says Sure thing, which area are you interested in and what is your preferred cuisine, such as Italian and Indian? USER says I would prefer a restaurant which serves up Cambodian food in SF. SYSTEM says I have managed to find a nice restaurant called Anh Hong which is located in San Francisco. USER says Are there any alternative restaurants? SYSTEM says Yes there is, Aux Delices is also a nice restaurant located in San Francisco. USER says Sure, that sounds great! SYSTEM says Would you like me to make a reservation? USER says Yes, please do so. SYSTEM says What time would you like dine in at the restaurant? USER says I would prefer to dine in at 19:15. SYSTEM says Please confirm your reservation for 2 people at Aux Delices in San Francisco at 7:15 pm today. USER says Sorry, could you change the booking to 18:30 for 3 people? SYSTEM says Sure, please confirm your reservation at 6:30 pm for 3 people. USER says That's fine for me. May I know where they are located at? SYSTEM says They are located at 2327 Polk Street. Unfortunately, I was unable to make the reservation for you. Would you prefer a reservation at Aux Delices today for 3 people at 7 pm instead? USER says No, thank you anyway. SYSTEM says No problem, have a great day ahead!