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: 'can i find a turkish restaurant unintelligible'
System: 'The Agora is a great restaurant. It serves turkish food. It's in the expensive price range.'
User: 'price range'
System: 'The Agora is an outstanding venue. The price for main courses ranges from 9 pounds to 11 pounds 50 and the price for a cappuccino is 2 pounds 25.'
User: 'i want to find a turkish restaurant'
System: 'The Agora is a great restaurant, it serves turkish food and it's in the expensive price range.'
User: 'in expenso price range'
System: 'The Anatolia Restaurant, which serves turkish food, is a great restaurant. It's in the expensive price range.'
User: 'can i know the address phone number and the postcode'
System: 'The Anatolia Restaurant is on 30 Bridge Street, its phone number is 01223902117 and it's in the area with the postcode CB2 1UJ. The price for main courses ranges from 11 pounds 50 to 15 pounds 95.'
User: 'thank you good bye'


SOLUTION: Expensive

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: 'i am looking for an expensive restaurant in a castle hill area'
System: 'Are you looking for somewhere near a particular venue? For example, Jesus College, the Saint Barnabas Press Gallery, or the Whipple Museum of the History of Science.'
User: 'castle hill area'
System: 'Are you looking for somewhere near a particular venue? For example, Downing College, Emmanuel College, or Queens' College.'
User: 'unintelligible castle hill'
System: 'What part of town do you have in mind? For example, Fen Ditton, or Newnham.'
User: 'castle hill'
System: 'What part of town do you have in mind? For example, something in the Arbury, Chesterton, or central area.'
User: 'breathing sil'
System: 'What type of food would you like? For example, Cafe food, Northern european, or pub.'
User: 'breathing sil'
System: 'What type of food would you like? For example, American, or Italian.'
User: 'expensive restaurant'
System: 'What type of food would you like? For example, pub, American, or Contemporary.'
User: 'italian'
System: 'Would you like vegetarian or X food?'
User: 'italian food coughing'
System: 'Blue Spice, which is in the expensive price range, is a great restaurant.'
User: 'vegetarian'
System: 'There is no restaurant serving vegetarian food in the expensive price range.'
User: 'sil'
System: 'There is no restaurant serving vegetarian food in the expensive price range.'
User: 'in what area'
System: 'Blue Spice is in the Girton part of town.'
User: 'breathing looking for a restaurant in castle hill'
System: 'There is no restaurant serving vegetarian food in the expensive price range.'
User: 'coughing sil'
System: 'Can I help you with anything else?'
User: 'breathing sil'
System: 'There is no restaurant serving vegetarian food in the expensive price range.'
User: 'i am looking for an expensive restaurant in the castle hill area'
System: 'The Hotel du Vin is a great restaurant and it's in the expensive price range.'
User: 'do you have a restaurant in castle hill'
System: 'There is no restaurant serving vegetarian food in the expensive price range.'
User: 'where is it located'
System: 'The Hotel du Vin is located on 15-19 Trumpington Street.'
User: 'do you have a restaurant in castle hill'
System: 'Would you like a vegetarian food, or you don't care?'
User: 'yes'
System: 'Would you like a vegetarian food, or you don't care?'
User: 'thank you good bye'


SOLUTION: Expensive

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 chinese take away restaurant'
System: 'Would you like chinese or X food?'
User: 'chinese'
System: 'Are you looking for somewhere near a particular venue? For example, Cherry Hinton Water Play, Queens' College, or Primavera.'
User: 'i do not care'
System: 'What kind of price range are you looking for? For example, cheap, or expensive.'
User: 'moderate'
System: 'The J Restaurant is a great restaurant. It serves chinese food. It's in the moderate price range.'
User: 'what is the address and area of the venue'
System: 'The J Restaurant is on 86, Regent Street.'
User: 'what is the area of the venue'
System: 'The J Restaurant is in the riverside part of town.'
User: 'thank you good bye'


SOLUTION:
Moderate

