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: 'cheap r cheap restaurant fen ditton area'
System: 'What type of food would you like? For example, Fastfood, Fusion, or Italian.'
User: 'doesnt matter'
System: 'La Raza, which is in the cheap price range, is an outstanding restaurant.'
User: 'address'
System: 'La Raza is on 4-6, The Basement, Rose Crescent.'
User: 'type of food'
System: 'La Raza is a great restaurant.'
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 restaurant that sells drinks and snacks only'
System: 'The Fleur, which serves drinks and snacks, is a great restaurant.'
User: 'it should have a moderate price range'
System: 'The Fleur, which serves drinks and snacks, is a great restaurant. It's in the moderate price range.'
User: 'you please give me the address and the area'
System: 'The Fleur is located on 73 Humberstone Road.'
User: 'in which area'
System: 'The Fleur is in the riverside part of town.'
User: 'thank you goodbye'


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: 'unintelligible'
System: 'What kind of venue are you looking for? For example, a pub.'
User: 'ill give you five and then ill be done'
System: 'What kind of venue are you looking for? For example, a cafe, or a restaurant.'
User: 'in fifteen minutes'
System: 'What kind of venue are you looking for? For example, a cafe, or a restaurant.'
User: 'contemporary'
System: 'What kind of venue are you looking for? For example, a pub, or a restaurant.'
User: 'restaurant'
System: 'What kind of price range are you looking for? For example, cheap, or free.'
User: 'traditional restaurant'
System: 'What kind of price range are you looking for? For example, cheap, expensive, or moderate.'
User: 'expensive'
System: 'The Cambridge Chop House, which is in the Girton part of town, is a great restaurant. This place, which serves traditional food, is in the expensive price range.'
User: 'expensive'
System: 'The phone number of The Cambridge Chop House is 01223359506. The price for main courses ranges from 11 pounds to 15 pounds.'
User: 'you repeat the phone number'
System: 'The phone number of The Cambridge Chop House is 01223359506.'
User: 'thank you goodbye'


SOLUTION:
Expensive