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: 'unintelligible restaurant'
System: 'What part of town do you have in mind? For example, something in the Arbury, Fen Ditton, or Romsey area.'
User: 'no preference'
System: 'Let me confirm. You are looking for a french venue.'
User: 'no'
System: 'What kind of price range are you looking for? For example, free, or moderate.'
User: 'any'
System: 'What part of town do you have in mind? For example, something in the Girton, King's Hedges, or riverside area.'
User: 'sil'
System: 'What type of food would you like? For example, Cafe food, or Greek.'
User: 'cafe food'
System: 'What part of town do you have in mind? For example, something in the Arbury, Barnwell, or New Chesterton area.'
User: 'any'
System: 'Are you looking for somewhere near a particular venue? For example, Clare College, the People's Portraits Exhibition, or Primavera.'
User: 'no'
System: 'Carringtons is a great cafe and an outstanding restaurant and it serves cafe food and english food.'
User: 'the address'
System: 'Carringtons is located on 23 Market Street.'
User: 'phone number'
System: 'The phone number of Carringtons is 01223361792.'
User: 'good bye thank you'


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: 'looking for an expensive restaurant in trumpington'
System: 'Are you looking for somewhere near a particular venue? For example, Artspace, Wandlebury Country Park, or Primavera.'
User: 'trumpington area'
System: 'What type of food would you like? For example, pub, American, or Thai.'
User: 'american'
System: 'What type of food would you like? For example, Chinese take away, Middleeastern, or Vegetarian.'
User: 'expensive chinese food'
System: 'Wok n Grill, which is in the Trumpington part of town, is a great restaurant. This place, which serves chinese food, is in the expensive price range.'
User: 'what is the address'
System: 'Wok n Grill is located on 18 High Street, Trumpington.'
User: 'thank you goodbye'


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: 'unitelligible'
System: 'What kind of venue are you looking for? For example, a pub, or a restaurant.'
User: 'unintelligible'
System: 'What kind of venue are you looking for? For example, a cafe, or a pub.'
User: 'mexican restaurant'
System: 'There is no restaurant in the Girton area and serving fastfood.'
User: 'sil'
System: 'Can I help you with anything else?'
User: 'unintelligible mexican restaurant'
System: 'Nanna Mexico, which serves mexican and tex mex food, is a great restaurant.'
User: 'sil'
System: 'Nanna Mexico, which serves mexican and tex mex food, is an outstanding restaurant.'
User: 'unintelligible'
System: 'Nanna Mexico, which serves mexican and tex mex food, is an outstanding restaurant.'
User: 'unintelligible'
System: 'There is no restaurant in the Girton area and serving mexican and tex mex food.'
User: 'thank you goodbye'


SOLUTION:
Expensive