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.

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 restaurant'
System: 'What part of town do you have in mind? For example, something in the Cherry Hinton, Girton, or Trumpington area.'
User: 'romsey area'
System: 'What type of food would you like? For example, pub, Mediterranean, or Traditional.'
User: 'mediterranean'
System: 'There is no restaurant serving mediterranean food in the cheap price range.'
User: 'traditional'
System: 'There is no restaurant serving traditional food in the cheap price range.'
User: 'pub'
System: 'Would you like a cheap price range, or you don't care?'
User: 'cheap price range'
System: 'Are you looking for a pub or a restaurant?'
User: 'restaurant'
System: 'What type of food would you like? For example, East asian, Seafood, or Vegetarian.'
User: 'east asian'
System: 'There is no restaurant in the Romsey area and serving east asian food.'
User: 'i dont care'
System: 'There is no restaurant in the Romsey area and serving east asian food.'
User: 'cheap food'
System: 'Would you like a romsey area, or you don't care?'
User: 'romsey area'
System: 'Would you like an east asian food, or you don't care?'
User: 'i dont care'
System: 'The Royal Standard, which is in the Romsey part of town, is an outstanding restaurant. It's in the cheap price range.'
User: 'phone number'
System: 'The phone number of the Royal Standard is 01223902175. The price for main courses ranges from 4 pounds 75 to 7 pounds 50.'
User: 'post code'
System: 'The Royal Standard is in the area with the postcode CB1 3NL.'
User: 'thank you good bye'

Cheap

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'
System: 'What type of food would you like? For example, East asian, pub, or Fusion.'
User: 'a greek restaurant'
System: 'Are you looking for somewhere near a particular venue? For example, the Botanical Garden* Botanical Gardens, Clare College, or Hughes Hall.'
User: 'greek'
System: 'Are you looking for somewhere near a particular venue? For example, the Lynne Strover Gallery, Trinity College, or Wandlebury Country Park.'
User: 'no'
System: 'The Eraina Taverna, which serves greek food, is an outstanding restaurant.'
User: 'i need the price range'
System: 'The Eraina Taverna is a great venue. The price for main courses ranges from 6 pounds 50 to 13 pounds 95.'
User: 'the phone number and postcode of a greek restaurant'
System: 'The Varsity, which serves greek food, is a great restaurant.'
User: 'what is the phone number and postcode'
System: 'The phone number of the Varsity is 01223356060 and it's in the area with the postcode CB2 3AR.'
User: 'thank you goodbye'

Don't Care

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 am looking for a moderately priced restaurant and it should be in 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: 'and what is the address for that restaurant'
System: 'The Ranch is the only restaurant in the King's Hedges area in the moderate price range.'
User: 'can you tell me the phone number please'
System: 'The Ranch is on 100 Histon Road and its phone number is 01223322772.'
User: 'and what type of food do they serve at the ranch'
System: 'The Ranch serves american food.'
User: 'alright thank you goodbye'


Moderate

