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: 'yes im looking for an american restaurant'
System: 'What kind of price range are you looking for? For example, cheap, free, or moderate.'
User: 'i dont care'
System: 'What part of town do you have in mind? For example, something in the Castle Hill, Girton, or King's Hedges area.'
User: 'i dont care'
System: 'Gourmet Burger , which serves american food, is an outstanding restaurant.'
User: 'whats the address phone number and price of the venue'
System: 'Gourmet Burger  is located on 43-45 Regent Street and its phone number is 01223312598. The price for main courses ranges from 3 pounds 95 to 8 pounds 45.'
User: 'thank you good bye'


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: 'breathing sil'
System: 'What kind of venue are you looking for? For example, a pub, or a restaurant.'
User: 'noise sil'
System: 'Are you looking for a cafe or a restaurant?'
User: 'clicking sil'
System: 'Let me confirm. You are looking for a thai venue.'
User: 'a unitelligible restaurant'
System: 'Let me confirm. You are looking for a thai venue.'
User: 'that is cheap'
System: 'Let me confirm. You are looking for a thai venue.'
User: 'knock sil'
System: 'What type of food would you like? For example, Mexican and Tex Mex, American, or Chinese.'
User: 'sea food'
System: 'There is no restaurant serving seafood in the cheap price range.'
User: 'sea food'
System: 'Would you like a seafood, or you don't care?'
User: 'i dont care'
System: 'What part of town do you have in mind? For example, something in the New Chesterton, Newnham, or Trumpington area.'
User: 'unintelligible 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: 'unintelligible contemporary restaurant'
System: 'All Bar One is a great restaurant, it serves contemporary food and it's in the cheap price range.'
User: 'address'
System: 'All Bar One is on 36 Saint Andrews Street.'
User: 'area'
System: 'All Bar One is an outstanding restaurant.'
User: 'unintelligible area'
System: 'All Bar One is a great restaurant, it serves contemporary food and it's in the cheap price range.'
User: 'unintelligible comtemporary restaurant area'
System: 'All Bar One is a great restaurant, it serves contemporary food and it's in the cheap price range.'
User: 'unintelligible area'
System: 'All Bar One, which serves contemporary food, is a great restaurant. It's in the cheap price range.'
User: 'unintelligible'
System: 'All Bar One, which serves contemporary food, is a great restaurant. It's in the cheap price range.'
User: 'address'
System: 'All Bar One is on 36 Saint Andrews Street.'
User: 'cheap price range area'
System: 'All Bar One is a great venue. The price for main courses ranges from 7 pounds 95 to 12 pounds 95 and the price for a glass of wine ranges from 2 pounds 85 to 6 pounds 95.'
User: 'unintelligible area'
System: 'All Bar One is a great restaurant.'
User: 'cheap contemporary restaurant area'
System: 'All Bar One, which serves contemporary food, is an outstanding restaurant. It's in the cheap price range.'
User: 'chesterton cheap price range restaurant'
System: 'There is no restaurant in the Chesterton area in the cheap price range.'
User: 'thank you good bye'


SOLUTION:
Cheap