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: 'yawning'
System: 'What kind of venue are you looking for? For example, a cafe, a pub, or a restaurant.'
User: 'im looking'
System: 'What kind of price range are you looking for? For example, expensive, free, or moderate.'
User: 'expensive restaurant'
System: 'Let me confirm. You are looking for a venue in the expensive price range.'
User: 'expensive'
System: 'What type of food would you like? For example, Contemporary, Fusion, or Vegetarian.'
User: 'yes'
System: 'What part of town do you have in mind? For example, something in the Arbury, Castle Hill, or New Chesterton area.'
User: 'any food'
System: 'What part of town do you have in mind? For example, something in the Addenbrooke's, Girton, or Newnham area.'
User: 'addenbrookes'
System: 'Let me confirm. You don't care about the food and you are looking for a venue.'
User: 'the addenbrookes area'
System: 'Let me confirm. You don't care about the food and you are looking for a venue.'
User: 'yes'
System: 'Are you looking for a pub or a restaurant?'
User: 'a restaurant'
System: 'The Lucky Star is a great restaurant, it's in the Addenbrooke's part of town and it's in the expensive price range.'
User: 'a restaurant'
System: 'The Lucky Star is an outstanding restaurant. It's in the Addenbrooke's part of town. It's in the expensive price range.'
User: 'may i have the address'
System: 'The Lucky Star is located on Unit.'
User: 'what is the a'
System: 'The Lucky Star is in the Addenbrooke's part of town.'
User: 'what is the address'
System: 'The Lucky Star is located on Unit.'
User: 'and the phone number'
System: 'The phone number of the Lucky Star is 01223244277.'
User: 'thank you good bye'


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: 'can i have an expensive east asian restaurant'
System: 'Shiraz, which serves east asian food, is a great restaurant. It's in the expensive price range.'
User: 'can i have the address please'
System: 'Shiraz is located on 84 Regent Street.'
User: 'can i have the phone number please'
System: 'The phone number of Shiraz is 01223902104.'
User: 'can i have the price range'
System: 'Shiraz is a great venue. The price for main courses ranges from 9 pounds to 14 pounds 15.'
User: 'background noise'
System: 'Shiraz is an outstanding restaurant, it serves east asian food and it's in the expensive price range.'
User: 'can i have the price venue'
System: 'Shiraz is an outstanding venue. The price for main courses ranges from 9 pounds to 14 pounds 15.'
User: 'thank you good bye'


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'
System: 'What kind of venue are you looking for? For example, a cafe, or a restaurant.'
User: 'spanish restaurant'
System: 'What kind of price range are you looking for? For example, free, or moderate.'
User: 'moderate'
System: 'Carringtons serves cafe food and english food. This place, which is a great cafe and an outstanding restaurant, is in the moderate price range.'
User: 'can i have the address'
System: 'Carringtons is located on 23 Market Street.'
User: 'can i have the price venue'
System: 'Carringtons is an outstanding venue. The price for main courses ranges from 4 pounds 25 to 6 pounds 25 and the price for a cappuccino is 1 pound 95.'
User: 'sil'
System: 'Carringtons is an outstanding restaurant.'
User: 'can i have the prices'
System: 'Carringtons is a great venue. The price for main courses ranges from 4 pounds 25 to 6 pounds 25 and the price for a cappuccino is 1 pound 95.'
User: 'thank you goodbye'


SOLUTION:
Don't Care