U: I would like to go to a nightclub in the centre.

S: You have five options for nightclubs in the center. Soul Tree Nightclub has the lowest entry fee, at 4 pounds.

U: What is the postcode for Soul Tree Nightclub?

S: The post code is cb23qf. Is there anything else I can help you with?

U: Yes.  Are there any North Indian restaurants close to the nightclub?

S: What's your price range?

U: I would like something cheap.

S: There are no North Indian restaurants but there are some Indian restaurants in the centre of town. Would you like information about one of those?

U: Actually, can you check for a Chinese restaurant in the north then?

S: I'm sorry I may have misunderstood. Were you looking for cheap Indian food on the north side of town?

U: I was, but since there's no cheap Indian food in the north I want to see if there's any cheap Chinese in the north.

S: There's no cheap Chinese food in the north. Would you like me try something else?

U: are there any chinese restaurants that are cheap in the north?

S: Unfortunately, there are none. Could you like to try an alternative type of food?

U: No, i didn't have any other choices.

S: perhaps we try a different location?

U: Do you have any cheap chinese restaurants in the centre?

S: Yes, we have 3. I recommend Golden House.

U: What is the quality of service by the waitstaff?
S: The Golden House gets some mixed reviews of their service. The majority find the service to be very good and friendly while others found their service to be average. Do you have any other questions?