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: 'unintelligible'
System: 'What kind of price range are you looking for? For example, expensive, free, or moderate.'
User: 'unintelligible'
System: 'What kind of price range are you looking for? For example, expensive, or free.'
User: 'a cheap price range'
System: 'What kind of venue are you looking for? For example, a cafe, a pub, or a restaurant.'
User: 'unintelligible'
System: 'What kind of venue are you looking for? For example, a pub, or a restaurant.'
User: 'unintelligible'
System: 'Are you looking for a venue with an internet connection?'
User: 'cafe food restaurant'
System: 'Are you looking for a pub or a restaurant?'
User: 'restaurant cafe food restaurant'
System: 'Subway, which serves cafe food, is a great restaurant. It's in the cheap price range.'
User: 'was the address and post code'
System: 'Subway, which is in the area with the postcode CB1 2AD, is located on 40-42 Mill Road. The price for main courses ranges from 1 pound 99 to 5 pounds 60.'
User: 'thank you goodbuy'


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: 'im looking for a moderately priced restaurant near the kings hedges area'
System: 'The Ranch, which is in the King's Hedges part of town, is a great restaurant. It's in the moderate price range.'
User: 'whats the address phone number and type of food'
System: 'The Ranch is located on 100 Histon Road. Its phone number is 01223322772.'
User: 'what type of food do they serve'
System: 'The Ranch serves american food.'
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: 'looking for a cheap pub with a tv'
System: 'The Bakers, which has a television, is in the cheap price range. It's an outstanding pub.'
User: 'are children allowed'
System: 'The Bakers allows children, it's in the cheap price range and it's an outstanding pub.'
User: 'unintelligible'
System: 'The phone number of The Bakers is 01223304121.'
User: 'thank you good bye'


SOLUTION:
Cheap

