TASK DEFINITION: The input is a conversation between an automated system and a user looking for suggestions for pubs, restaurants and coffee shops in Cambridge. In the dialogue, the user may provide some criteria for the type of place they want such as price range, cuisine, etc. Given such a dialogue, output the price range the user if looking for which can take one of four values: Cheap, Moderate, Expensive and Don't Care. Output cannot be any other value than the four values. Note that if the user asks for the prices of items provided at a pub, restaurant or coffee shop but doesn't mention the price range they are looking for then the correct classification will be Don't Care. If the user does not mention a particular price, the correct classification will be Don't Care.
PROBLEM: System: 'Thank you for calling the Cambridge Information system. Your call will be recorded for research purposes. You may ask for information about a place to eat, such as a restaurant, a pub, or a cafe. How may I help you?'
User: 'im looking for a restaurant in new chesterton i dont care about the price'
System: 'What type of food would you like? For example, East asian, Contemporary, or Continental.'
User: 'contemporary'
System: 'There is no restaurant in the New Chesterton area and serving contemporary food.'
User: 'do you have another restaurant in the new chesterton area'
System: 'There is no restaurant in the New Chesterton area and serving contemporary food.'
User: 'sil'
System: 'Hakka, which is in the New Chesterton part of town, is an outstanding restaurant.'
User: 'sil'
System: 'What type of food would you like? For example, Chinese take away, Chinese, or Contemporary.'
User: 'what is the phone number and address'
System: 'Hakka is located on 24 Milton Road. Its phone number is 01223568988. The price for main courses ranges from 5 pounds to 13 pounds.'
User: 'chinese'
System: 'Hakka, which is in the New Chesterton part of town, is an outstanding restaurant. It serves chinese food.'
User: 'thank you goodbye'


SOLUTION: Don't Care

PROBLEM: System: 'Thank you for calling the Cambridge Information system. Your call will be recorded for research purposes. You may ask for information about a place to eat, such as a restaurant, a pub, or a cafe. How may I help you?'
User: 'sil'
System: 'What kind of venue are you looking for? For example, a cafe.'
User: 'sil'
System: 'What kind of venue are you looking for? For example, a pub.'
User: 'im looking for a rest'
System: 'What kind of venue are you looking for? For example, a cafe, a pub, or a restaurant.'
User: 'a restaurant'
System: 'What type of food would you like? For example, Mexican and Tex Mex, Indian, or International.'
User: 'restaurant'
System: 'What kind of price range are you looking for? For example, free, or moderate.'
User: 'american'
System: 'Are you looking for somewhere near a particular venue? For example, Hughes Hall, Little Saint Mary's, or The Fitzwilliam Museum.'
User: 'american'
System: 'What part of town do you have in mind? For example, something in the Arbury, Cherry Hinton, or Romsey area.'
User: 'city center'
System: 'Gourmet Burger , which is in the central part of town, is an outstanding restaurant. It serves american food.'
User: 'address'
System: 'Gourmet Burger  is on 43-45 Regent Street.'
User: 'three two four five begent'
System: 'Gourmet Burger  is an outstanding restaurant.'
User: 'phone number'
System: 'The phone number of Gourmet Burger  is 01223312598.'
User: 'and the price'
System: 'Gourmet Burger  is an outstanding venue. The price for main courses ranges from 3 pounds 95 to 8 pounds 45.'
User: 'ok thank you'
System: 'Gourmet Burger  is an outstanding restaurant.'
User: 'is it burger gourmet'
System: 'Gourmet Burger  is a great restaurant.'
User: 'sil'
System: 'Gourmet Burger , which is in the central part of town, is an outstanding restaurant. It serves american food.'
User: 'thank you'
System: 'Gourmet Burger  is an outstanding restaurant.'
User: 'sil'
System: 'Gourmet Burger  is an outstanding restaurant.'
User: 'thank you good bye'


SOLUTION: Cheap

PROBLEM: System: 'Thank you for calling the Cambridge Information system. Your call will be recorded for research purposes. You may ask for information about a place to eat, such as a restaurant, a pub, or a cafe. How may I help you?'
User: 'im looking for a cafe food restaurant with a moderate price range'
System: 'Carringtons serves cafe food and english food. This place, which is a great cafe and an outstanding restaurant, is in the moderate price range.'
User: 'what is the address'
System: 'Carringtons is on 23 Market Street.'
User: 'what is the phone number'
System: 'The phone number of Carringtons is 01223361792.'
User: 'what is the area'
System: 'Carringtons is in the central part of town.'
User: 'thank you goodbye'


SOLUTION:
Moderate