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 to find a expensive restaurant near romsey area'
System: 'The Backstreet Bistro, which is in the Romsey part of town, is a great restaurant. It's in the expensive price range.'
User: 'okay can i get the address the phone number and the postcode'
System: 'The Backstreet Bistro is on 2 Sturton Street. Its phone number is 01223306306. It's in the area with the postcode CB1 2QA.'
User: 'of the restaurant'
System: 'What part of town do you have in mind? For example, something in the Castle Hill, central, or King's Hedges area.'
User: 'i want to find it near romsey area'
System: 'The Backstreet Bistro is a great restaurant and it's in the Romsey part of town. It's in the expensive price range.'
User: 'sil'
System: 'What part of town do you have in mind? For example, something in the Chesterton, Girton, or riverside area.'
User: 'which is nearer to romsey area'
System: 'The Backstreet Bistro is in the Romsey part of town.'
User: 'can i get the address the phone number and the postcode'
System: 'The Backstreet Bistro, which is in the area with the postcode CB1 2QA, is located on 2 Sturton Street. Its phone number is 01223306306.'
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: 'noise sil'
System: 'What kind of price range are you looking for? For example, cheap, or free.'
User: 'noise cheap'
System: 'What kind of venue are you looking for? For example, a cafe, a pub, or a restaurant.'
User: 'noise sil'
System: 'What kind of venue are you looking for? For example, a pub, or a restaurant.'
User: 'restaurant'
System: 'What kind of venue are you looking for? For example, a pub, or a restaurant.'
User: 'thai restaurant'
System: 'The Milton Park English and Thai Restaurant is a great restaurant, it serves thai food and it's in the cheap price range.'
User: 'where is it at'
System: 'The Milton Park English and Thai Restaurant is on Milton Park Golf Course, Ely Road, Milton.'
User: 'what is the phone number'
System: 'The phone number of the Milton Park English and Thai Restaurant is 01223864602.'
User: 'noise sil'
System: 'The Milton Park English and Thai Restaurant 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: 'background noise'
System: 'What kind of venue are you looking for? For example, a pub, or a restaurant.'
User: 'background noise'
System: 'Can I help you with anything else?'
User: 'cheap restaurant'
System: 'Let me confirm. You are looking for a venue in the cheap price range.'
User: 'unintelligible'
System: 'Let me confirm. You are looking for a venue in the cheap price range.'
User: 'yes'
System: 'Let me confirm. You don't care about the location and you are looking for a venue.'
User: 'yes'
System: 'La Raza is a great restaurant and it's in the cheap price range.'
User: 'romsey area'
System: 'The Royal Standard, which is in the Romsey part of town, is an outstanding restaurant. It's in the cheap price range.'
User: 'background noise rom'
System: 'There is no pub in the Romsey area.'
User: 'phone number'
System: 'The Baron of Beef is an outstanding pub and it's in the cheap price range.'
User: 'phone number'
System: 'The phone number of The Baron of Beef is 01223505022.'
User: 'cheap restaurant in the romsey area'
System: 'The Royal Standard is a great restaurant, it's in the Romsey part of town and it's in the cheap price range.'
User: 'background noise'
System: 'There is no pub in the Romsey area.'
User: 'phone number'
System: 'The phone number of the Royal Standard is 01223902175.'
User: 'phone number'
System: 'The phone number of the Royal Standard is 01223902175.'
User: 'type of food'
System: 'The Baron of Beef, which is in the cheap price range, is an outstanding pub.'
User: 'type of food'
System: 'The Baron of Beef, which is in the cheap price range, is a great pub.'
User: 'thank you good bye'


SOLUTION:
Cheap

