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.

Example Input: 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 an east asian restaurant that should be expensive'
System: 'Are you looking for somewhere near a particular venue? For example, the Broughton House, Downing College, or the Museum of Archaelogy and Anthropology.'
User: 'im looking for an east asian restaurant'
System: 'What part of town do you have in mind? For example, something in the Arbury, Chesterton, or Romsey area.'
User: 'any area'
System: 'Are you looking for somewhere near a particular venue? For example, Corpus Christi, Kettle's Yard, or Pembroke College.'
User: 'sil'
System: 'Are you looking for somewhere near a particular venue? For example, Christ's College, Great Saint Mary's Church, or Sheep's Green.'
User: 'east asian restaurant'
System: 'Are you looking for somewhere near a particular venue? For example, Great Saint Mary's Church, Little Saint Mary's, or Wandlebury Country Park.'
User: 'unintelligible'
System: 'Are you looking for somewhere near a particular venue? For example, Churchill College, Kettle's Yard, or the Museum of Classical Archaeology.'
User: 'east asian'
System: 'Are you looking for somewhere near a particular venue? For example, All Saints Church, Cambridge Contemporary Art, or Saint Catharine's College.'
User: 'kettles yard'
System: 'Are you looking for somewhere near a particular venue? For example, All Saints Church, Byard Art, or Milton Country Park.'
User: 'kettles yard'
System: 'Are you looking for somewhere near a particular venue? For example, the Museum of Archaelogy and Anthropology, the People's Portraits Exhibition, or Wandlebury Country Park.'
User: 'thank you goodbye'

Example Output: Expensive

Example Input: 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: 'im looking for a restaurant that serves cafe food that is cheap'
System: 'Are you looking for a cafe or a restaurant?'
User: 'restaurant that serves cafe food'
System: 'Are you looking for a cafe or a restaurant?'
User: 'restaurant'
System: 'Subway, which serves cafe food, is a great restaurant. It's in the cheap price range.'
User: 'id like to know their phone number and area'
System: 'The phone number of Subway is 01223461323.'
User: 'what area is it in'
System: 'Subway is in the riverside part of town.'
User: 'alright thank you good bye'

Example Output: Cheap

Example Input: 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: 'yes im looking for a moderately priced restaurant in the new chesterton area'
System: 'Hakka is an outstanding restaurant, it's in the New Chesterton part of town and it's in the moderate price range.'
User: 'whats the phone number'
System: 'The phone number of Hakka is 01223568988.'
User: 'and whats the postcode'
System: 'Hakka is in the area with the postcode CB4 1JY.'
User: 'thank you bu bye'

Example Output:
Moderate