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: 'i want a drinks and snacks only restaurant'
System: 'The Fleur, which serves drinks and snacks, is an outstanding restaurant.'
User: 'what is the address'
System: 'The Fleur is located on 73 Humberstone Road.'
User: 'what is the phone number and area'
System: 'The phone number of The Fleur is 01223902183.'
User: 'what is the area'
System: 'The Fleur is in the riverside part of town.'
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 pub and it should have a tv'
System: 'Are you looking for a venue that allows children?'
User: 'no'
System: 'The Anchor, which has a television, is in the moderate price range. It's a great pub.'
User: 'noise sil'
System: 'The Anchor has a television and it's in the moderate price range. It's an outstanding pub.'
User: 'im looking for a ba'
System: 'The Anchor, which has a television, is in the moderate price range. It's a great pub.'
User: 'what is the address'
System: 'The Anchor is located on Silver Street.'
User: 'what is the address of the venue'
System: 'The Anchor is located on Silver Street.'
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: 'im looking for a continental restaurant'
System: 'What type of food would you like? For example, International, or Spanish.'
User: 'um it wou in the expensive price range'
System: 'Blue Spice, which serves indian food, is an outstanding restaurant. It's in the expensive price range.'
User: 'doesnt matter'
System: 'Let me confirm. You are looking for an indian venue.'
User: 'um can i have the phone number'
System: 'The phone number of Blue Spice is 01223413337. The price for main courses ranges from 12 pounds 50 to 12 pounds 50.'
User: 'a continental restaura'
System: 'Alimentum, which serves continental and french food, is a great restaurant. It's in the expensive price range.'
User: 'what area is it in'
System: 'Alimentum is in the Addenbrooke's part of town.'
User: 'what area'
System: 'Alimentum is in the Addenbrooke's part of town.'
User: 'thank you goodbye'


SOLUTION:
Expensive