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: Does the restaurant have a nice view?
S: According to reviews, Golden House offers an excellent view, although the quality of the view may depend on your table. Would you like to make a reservation?