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.

Input: Consider 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: 'i am looking for a cheap restaurant in the addonbrookes area'
System: 'The Peking Restaurant, which is in the Addenbrooke's part of town, is an outstanding restaurant. It's in the cheap price range.'
User: 'what is the address'
System: 'The Peking Restaurant is located on Unit 3, The Belvedere, Homerton Street.'
User: 'what is the post code'
System: 'The Peking Restaurant is in the area with the postcode CB2 8NX.'
User: 'thank you good bye'


Output: Cheap


Input: Consider 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 cafe, or a pub.'
User: 'restaurant'
System: 'What type of food would you like? For example, Fusion, Seafood, or Thai.'
User: 'pub food'
System: 'What part of town do you have in mind? For example, something in the central, riverside, or Romsey area.'
User: 'background noise'
System: 'Are you looking for somewhere near a particular venue? For example, Artspace, the Gallery at twelve A High Street, or Old Schools.'
User: 'background noise'
System: 'What part of town do you have in mind? For example, something in the Castle Hill, Newnham, or Romsey area.'
User: 'background noise'
System: 'What part of town do you have in mind? For example, something in the Arbury, central, or Girton area.'
User: 'no'
System: 'What part of town do you have in mind? For example, something in the Arbury, Fen Ditton, or Girton area.'
User: 'central'
System: 'Are you looking for somewhere near a particular venue? For example, the Botanic Gardens, Churchill College, or the Museum of Archaelogy and Anthropology.'
User: 'central'
System: 'What part of town do you have in mind? For example, something in the Fen Ditton, King's Hedges, or Newnham area.'
User: 'expensive'
System: 'There is no pub in the expensive price range.'
User: 'city center'
System: 'Can I help you with anything else?'
User: 'no'
System: 'What part of town do you have in mind? For example, something in the Arbury, Girton, or Newnham area.'
User: 'background noise'
System: 'There is no pub in the expensive price range.'
User: 'thank you good bye'


Output: Expensive


Input: Consider 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: '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'



Output: Cheap