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: 'sil'
System: 'What kind of venue are you looking for? For example, a pub, or a restaurant.'
User: 'sil'
System: 'What kind of venue are you looking for? For example, a cafe, or a restaurant.'
User: 'sil'
System: 'What kind of venue are you looking for? For example, a cafe, or a pub.'
User: 'restaurant in the fen ditton area'
System: 'The Milton Park English and Thai Restaurant, which is in the Fen Ditton part of town, is a great restaurant. It's in the cheap price range.'
User: 'restaurant in the fen ditton area'
System: 'The Milton Park English and Thai Restaurant, which is in the Fen Ditton part of town, is an outstanding restaurant. It's in the cheap price range.'
User: 'sil'
System: 'Are you looking for somewhere near a particular venue? For example, Queens' College, The Fitzwilliam Museum, or Wandlebury Country Park.'
User: 'thank you good bye thank you good bye'
System: 'The Milton Park English and Thai Restaurant, which is in the Fen Ditton part of town, is a great restaurant. It's in the cheap price range.'
User: 'thank you good bye thank you good bye 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: '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: 'i need to find an expensive restaurant and it should be in the addenbrookes area'
System: 'What type of food would you like? For example, pub, English, or Fastfood.'
User: 'pub english'
System: 'There is no restaurant in the Addenbrooke's area and serving english food.'
User: 'i need to find an expensive restaurant in the addenbrookes area'
System: 'Would you like an english food, or you don't care?'
User: 'i dont care'
System: 'The Lucky Star, which is in the Addenbrooke's part of town, is an outstanding restaurant. It's in the expensive price range.'
User: 'uh what is the address of that venue'
System: 'The Lucky Star is located on Unit.'
User: 'thank you good bye'


Ex Output:

Expensive