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: 'yellingbackground'
System: 'What kind of venue are you looking for? For example, a cafe.'
User: 'im looking for a cheap restaurant in the city center area'
System: 'La Raza, which is in the central part of town, is a great restaurant. It's in the cheap price range.'
User: 'may i have the address and phone number'
System: 'La Raza is on 4-6, The Basement, Rose Crescent. Its phone number is 01223464550.'
User: 'what is the price range'
System: 'La Raza is in the cheap price range.'
User: 'thank you good bye'


SOLUTION: Cheap

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: 'noise sil'
System: 'What kind of venue are you looking for? For example, a pub, or a restaurant.'
User: 'noise sil'
System: 'What kind of price range are you looking for? For example, cheap, or free.'
User: 'a restaurant'
System: 'What kind of price range are you looking for? For example, expensive, or free.'
User: 'cheap'
System: 'What kind of venue are you looking for? For example, a pub, or a restaurant.'
User: 'free'
System: 'What kind of venue are you looking for? For example, a pub, or a restaurant.'
User: 'a restaurant'
System: 'Are you looking for a cafe or a restaurant?'
User: 'noise sil'
System: 'Are you looking for a cafe or a restaurant?'
User: 'a restaurant'
System: 'Are you looking for a cafe or a restaurant?'
User: 'a fast food restaurant'
System: 'Are you looking for somewhere near a particular venue? For example, Christ's College, Clare College, or Primavera.'
User: 'i dont care about the area'
System: 'La Raza, which serves spanish food, is an outstanding restaurant. It's in the cheap price range.'
User: 'no not spanish food no fast food'
System: 'La Raza is on 4-6, The Basement, Rose Crescent.'
User: 'im looking for a fast food restaurant'
System: 'La Raza, which serves spanish food, is a great restaurant. It's in the cheap price range.'
User: 'im looking for a fast food restaurant'
System: 'La Raza, which serves spanish food, is an outstanding restaurant. It's in the cheap price range.'
User: 'fast food'
System: 'La Raza, which serves spanish food, is a great restaurant. It's in the cheap price range.'
User: 'not spanish food not spanish food fast'
System: 'What type of food would you like? For example, English, Fastfood, or Fusion.'
User: 'food'
System: 'What type of food would you like? For example, English, Greek, or International.'
User: 'fast food'
System: 'What type of food would you like? For example, Chinese take away, or American.'
User: 'american'
System: 'Gourmet Burger , which serves american food, is a great restaurant. It's in the cheap price range.'
User: 'whats the phone number'
System: 'The phone number of Gourmet Burger  is 01223312598.'
User: 'yawn sil'
System: 'Gourmet Burger  is an outstanding restaurant.'
User: 'whats the phone number'
System: 'The phone number of Gourmet Burger  is 01223312598.'
User: 'thank you good bye'


SOLUTION: Cheap

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: 'a pub'
System: 'Are you looking for a venue that allows children?'
User: 'dont care'
System: 'Are you looking for a pub or a restaurant?'
User: 'a pub with internet'
System: 'Would you like other children, or you don't care?'
User: 'i dont care'
System: 'The Bakers is a great pub with an internet connection.'
User: 'cheap'
System: 'The Bakers, which has an internet connection, is in the cheap price range. It's a great pub.'
User: 'whats the phone number'
System: 'The phone number of The Bakers is 01223304121.'
User: 'price'
System: 'The Bakers is a great venue. The price for main courses ranges from 6 pounds to 8 pounds 49 and the price for a cheapest pint of beer is 2 pounds 25.'
User: 'thank you good bye'


SOLUTION:
Cheap