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: 'noise sil'
System: 'What kind of price range are you looking for? For example, expensive, free, or moderate.'
User: 'noise sil'
System: 'What kind of venue are you looking for? For example, a pub, or a restaurant.'
User: 'expensive'
System: 'What kind of venue are you looking for? For example, a cafe, or a pub.'
User: 'traditional restaurant'
System: 'What part of town do you have in mind? For example, something in the Girton, riverside, or Romsey area.'
User: 'a traditional restaurant'
System: 'Are you looking for somewhere near a particular venue? For example, All Saints Church, Downing College, or Great Saint Mary's Church.'
User: 'dont care'
System: 'The Granta Bar, which is in the expensive price range, is a great restaurant. It serves traditional food.'
User: 'no'
System: 'The Granta Bar is a great restaurant, it serves traditional food and it's in the expensive price range.'
User: 'what is the address'
System: 'The Granta Bar is located on University Centre, Granta Place.'
User: 'what is the postal code'
System: 'The Granta Bar is in the area with the postcode CB2 1RU.'
User: 'what is the address'
System: 'The Granta Bar is located on University Centre, Granta Place.'
User: 'thank you good bye'

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: 'i am looking for a moderately priced restaurant and it should be in the barnwell area'
System: 'The Wheatsheaf, which is in the Barnwell part of town, is an outstanding restaurant. It's in the moderate price range.'
User: 'if you can provide phone number address'
System: 'The Wheatsheaf is on Stow Road, Stow-Cum-Quy and its phone number is 01223812196.'
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: '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