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: 'background noise'
System: 'What kind of venue are you looking for? For example, a pub, or a restaurant.'
User: 'we are looking for a fusion restaurant and it should have a cheap price range make sure you get the address and price of the venue'
System: 'The Dojo Noodle Bar, which serves fusion food, is an outstanding restaurant. It's in the cheap price range.'
User: 'oh ok'
System: 'The Dojo Noodle Bar is on Miller's Yard. The price for main courses ranges from 5 pounds 70 to 7 pounds.'
User: 'where is it'
System: 'The Dojo Noodle Bar is located on Miller's Yard.'
User: 'can you spell it'
System: 'The phone number of the Dojo Noodle Bar is 01223363471.'
User: 'could you spell the address'
System: 'The Dojo Noodle Bar is on Miller's Yard.'
User: '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: 'sil'
System: 'What kind of venue are you looking for? For example, a cafe.'
User: 'moderately priced restaurant in the addenbrookes area'
System: 'Nando's Restaurant, Cambridge Leisure Park, which is in the Addenbrooke's part of town, is an outstanding restaurant. It's in the moderate price range.'
User: 'address type of food'
System: 'Nando's Restaurant, Cambridge Leisure Park is located on Unit G5, Cambridge Leisure Park, Clifton Way.'
User: 'type of food'
System: 'Nando's Restaurant, Cambridge Leisure Park is a great restaurant.'
User: 'what kind of food does it serve'
System: 'Nando's Restaurant, Cambridge Leisure Park serves mediterranean food.'
User: 'thank you goodbye'

Example Output: Moderate

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 a restaurant in the castle hill area'
System: 'What kind of price range are you looking for? For example, free, or moderate.'
User: 'it should be expensive um'
System: 'Are you looking for somewhere near a particular venue? For example, the Michaelhouse Centre, Milton Country Park, or Trinity College.'
User: 'um expensive high end'
System: 'Would you like thai or X food?'
User: 'castle hill'
System: 'Would you like thai or X food?'
User: 'thai'
System: 'What part of town do you have in mind? For example, Castle Hill, or Girton.'
User: 'thai'
System: 'Are you looking for somewhere near a particular venue? For example, Cherry Hinton Water Play, the Saint Barnabas Press Gallery, or Saint Catharine's College.'
User: 'castle hill'
System: 'Are you looking for somewhere near a particular venue? For example, the Museum Of Technology, Downing College, or the Gallery at twelve A High Street.'
User: 'no'
System: 'The Wrestlers is an outstanding restaurant, it serves thai food and it's in the expensive price range.'
User: 'no that doesnt matter'
System: 'The Wrestlers, which serves thai food, is an outstanding restaurant. It's in the expensive price range.'
User: 'what is the address'
System: 'The Wrestlers is on 337 Newmarket Road. The price for main courses ranges from 8 pounds 50 to 9 pounds 70 and the price for a cheapest pint of beer is 3 pounds 30.'
User: 'what is the address'
System: 'The Wrestlers is located on 337 Newmarket Road.'
User: 'thank you'
System: 'Can I help you with anything else?'
User: 'thank you goodbye'

Example Output:
Expensive