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: 'sil'
System: 'What kind of venue are you looking for? For example, a cafe, or a restaurant.'
User: 'im looking for an indian restaurant that should be expensive i also want to know the phone number and address'
System: 'Blue Spice is a great restaurant. It serves indian food. It's in the expensive price range.'
User: 'what is the phone number and address'
System: 'Blue Spice is located on Unit F1, Cambridge Leisure Park, Clifton Way and its phone number is 01223413337.'
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: 'pub food restaurant'
System: 'Would you like a cheap price range, or you don't care?'
User: 'expensive price range'
System: 'Revolution is an outstanding restaurant and it serves pub food. It's in the expensive price range.'
User: 'noise'
System: 'What part of town do you have in mind? For example, Romsey, or Trumpington.'
User: 'what is the address'
System: 'Revolution is on 3-7 Downing Street. The price for main courses ranges from 6 pounds 45 to 9 pounds 95 and the price for a cheapest glass of wine is 10 pounds.'
User: 'what is the phone number'
System: 'The phone number of Revolution is 01223364895.'
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: 'restaurant'
System: 'What type of food would you like? For example, Fusion, Italian, or Vegetarian.'
User: 'italian'
System: 'Are you looking for somewhere near a particular venue? For example, Churchill College, Corpus Christi, or Old Schools.'
User: 'addenbrookes'
System: 'What kind of price range are you looking for? For example, expensive.'
User: 'expensive'
System: 'Are you looking for somewhere near a particular venue? For example, Byard Art, Cafe Jello, or the People's Portraits Exhibition.'
User: 'addenbrookes area'
System: 'The Sorrento, which is in the Addenbrooke's part of town, is an outstanding restaurant. It serves italian food.'
User: 'phone number'
System: 'The phone number of The Sorrento is 01223243533.'
User: 'postcode of the venue'
System: 'The Sorrento is in the area with the postcode CB1 7AN.'
User: 'address'
System: 'The Sorrento is located on 196 Cherry Hinton Road.'
User: 'thank you good bye'


SOLUTION:
Expensive

