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.

Ex 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 pub food restaurant'
System: 'What kind of price range are you looking for? For example, cheap, or expensive.'
User: 'english restaurant with a moderate price range'
System: 'What part of town do you have in mind? For example, New Chesterton, or Romsey.'
User: 'i dont care the location'
System: 'The Lion and Lamb is a great restaurant, it serves pub food and it's in the moderate price range.'
User: 'can i get the address the phone number'
System: 'The Lion and Lamb is located on High Street, Milton and its phone number is 01223860202.'
User: 'and the price of the venue'
System: 'The Lion and Lamb is an outstanding venue. The price for main courses ranges from 5 pounds to 15 pounds and the price for a cheapest pint of beer is 3 pounds.'
User: 'can i get the address and phone number'
System: 'The Lion and Lamb is located on High Street, Milton and its phone number is 01223860202.'
User: 'background noise'
System: 'The Lion and Lamb is an outstanding restaurant.'
User: 'can i get the address'
System: 'The Lion and Lamb is on High Street, Milton.'
User: 'can i get the phone number'
System: 'The phone number of The Lion and Lamb is 01223860202.'
User: 'background noise'
System: 'The Lion and Lamb is a great restaurant.'
User: 'can i get the phone number'
System: 'The phone number of The Lion and Lamb is 01223860202.'
User: 'thank you good bye'


Ex Output:
Moderate


Ex 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 venue are you looking for? For example, a restaurant.'
User: 'im looking for a northern european restuarant in the cheap price range'
System: 'Polonia, which serves northern european food, is a great restaurant. It's in the cheap price range.'
User: 'what is the phone number'
System: 'The phone number of Polonia is 01223902138. The price for main courses ranges from 1 pound 50 to 7 pounds 50.'
User: 'thank you good bye'


Ex Output:
Cheap


Ex 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: 'coffee shop serving english food with cheap price range'
System: 'There is no restaurant serving english food in the cheap price range.'
User: 'sil'
System: 'There is no restaurant serving english food in the cheap price range.'
User: 'thank you good bye'
System: 'Would you like a cheap price range, or you don't care?'
User: 'yes'
System: 'Would you like an english food, or you don't care?'
User: 'yes'
System: 'Would you like a cheap price range, or you don't care?'
User: 'thank you good bye'


Ex Output:

Cheap