U: Hi there. I'd like to find a place to dine in the city centre, preferable with Sri Lankan food. Do you have any recommendations?

S: Sorry, I don't have any restaurants with sri lankan food in the centre. Would you like to try another type of food?

U: Could you try again? Moderately priced, perhaps?

S: Sorry, there was nothing found. Do you want to try a different kind of food?

U: How about modern european food?

S: There are two options for modern european food in centre in the moderate price range.  May I suggest Riverside Brasserie?

U: Sure! Could you tell me the address - including the postcode and phone number please?

S: Sure, they're located at the Doubletree by Hilton Cambridge Granta Place Mill Lane in postcode cb21rt. Their phone number is 01223259988. Can I help with anything else today?

U: Great. I am also looking for a guesthouse to stay in and I don't need parking.

S: Not a problem. Do you have a preference on area?

U: Moderately priced in the centre, please.

S: Unfortunately, there is no hotel in the moderately priced area

U: Is there any other type of hotel in the area?

S: Sorry, there are no guesthouse in centre within the moderate price range. Can I help you with anything else?

U: I understand that there are no guesthouses in the area.  But can you see if there are other hotels in the area?  Moderately priced and in the centre, please.

S: I was able to find cityroomz, it's a hotel in the centre that is moderately priced.  Can I make a booking for you?

U: Does that hotel has clean rooms?
S: Cityroomz according to most past guests offer clean rooms but some guests have not found the rooms clean to their satisfaction.  Can I help you with anything else?