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 a moderately priced japanese restaurant'
System: 'Yippee Noodle Bar, which serves chinese take away and japanese food, is a great restaurant. It's in the moderate price range.'
User: 'whats the address and area of the venue'
System: 'Yippee Noodle Bar is on 7-9 King Street.'
User: 'sil'
System: 'Yippee Noodle Bar is an outstanding restaurant.'
User: 'sil'
System: 'Yippee Noodle Bar, which serves chinese take away and japanese food, is a great restaurant. It's in the moderate price range.'
User: 'whats'
System: 'Are you looking for somewhere near a particular venue? For example, the Botanic Gardens, the Gallery at twelve A High Street, or Sheep's Green.'
User: 'whats the address'
System: 'Yippee Noodle Bar is on 7-9 King Street.'
User: 'no whats the address of the restaurant'
System: 'Teri-Aki is a great restaurant and it serves japanese food. It's in the moderate price range.'
User: 'what area is it in'
System: 'Teri-Aki, which is in the riverside part of town, is on 6-8 Quayside.'
User: 'thank you good bye'

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: 'sil'
System: 'What kind of venue are you looking for? For example, a pub, or a restaurant.'
User: 'expensive restaurant in the castle hill area'
System: 'What type of food would you like? For example, Indian, Mediterranean, or Spanish.'
User: 'expensive restaurant in the castle hill area'
System: 'Let me confirm. You are looking for a venue in the cheap price range.'
User: 'no expensive'
System: 'What part of town do you have in mind? For example, something in the central, Girton, or King's Hedges area.'
User: 'castle hill'
System: 'Let me confirm. You don't care about the location and you are looking for a venue.'
User: 'castle hill area expensive restaurant what is the phone number and address'
System: 'Blue Spice, which is in the expensive price range, is a great restaurant.'
User: 'is that in the castle hill area'
System: 'Blue Spice is on Unit F1, Cambridge Leisure Park, Clifton Way and its phone number is 01223413337.'
User: 'is that in the castle hill area'
System: 'Let me confirm. You don't care about the location. You are looking for a venue.'
User: 'thank you have a good day'

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: 'noise sil'
System: 'What kind of price range are you looking for? For example, cheap, expensive, or free.'
User: 'im looking for a cheap coffee shop serving english food'
System: 'The Cambridge Blue is an outstanding cafe, it serves english food and it's in the cheap price range.'
User: 'what is the address and post code'
System: 'The Cambridge Blue, which is in the area with the postcode CB2 1DB, is located on 24 Regent Street. I can't hear you. The Cambridge Blue, which is in the area with the postcode CB2 1DB, is located on 24 Regent Street.'
User: 'thank you good bye'

Example Output:
Cheap