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 the barnwell'
System: 'The Wheatsheaf, which is in the Barnwell part of town, is an outstanding restaurant.'
User: 'noise sil'
System: 'The Wheatsheaf, which is in the Barnwell part of town, is a great restaurant.'
User: 'nosie what type of food does it serve'
System: 'The Wheatsheaf serves traditional food.'
User: 'what type of food does it serve'
System: 'The Wheatsheaf serves traditional food.'
User: 'what is its telephone number'
System: 'The phone number of the Wheatsheaf is 01223812196.'
User: 'noise sil'
System: 'The Wheatsheaf is a great restaurant.'
User: 'noise sil'
System: 'The Wheatsheaf is a great restaurant.'
User: 'what is its phone number'
System: 'The phone number of the Wheatsheaf is 01223812196.'
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: 'im looking for a moderately priced restaurant in the fen ditton area'
System: 'What type of food would you like? For example, Chinese take away, Middleeastern, or Vegetarian.'
User: 'ah chinese'
System: 'Are you looking for somewhere near a particular venue? For example, All Saints Church, Downing College, or Wandlebury Country Park.'
User: 'fen ditton'
System: 'What part of town do you have in mind? For example, something in the Addenbrooke's, Barnwell, or central area.'
User: 'the fen ditton area'
System: 'What part of town do you have in mind? For example, something in the Cherry Hinton, Girton, or Trumpington area.'
User: 'thank you good bye'


SOLUTION: Moderate

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 want to find a spanish restaurant with a cheap price range'
System: 'La Raza is an outstanding restaurant. It serves spanish food. It's in the cheap price range.'
User: 'what is the address'
System: 'La Raza is located on 4-6, The Basement, Rose Crescent. The price for main courses ranges from 1 pound 95 to 13 pounds 95 and the entrance for adults is 4 pounds.'
User: 'whats the phone number'
System: 'The phone number of La Raza is 01223464550.'
User: 'thank you goodbye'


SOLUTION:
Cheap