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.

Input: Consider 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 price range are you looking for? For example, cheap, expensive, or moderate.'
User: 'im looking for a cheap restaurant'
System: 'Are you looking for somewhere near a particular venue? For example, Downing College, Gonville and Caius College, or the People's Portraits Exhibition.'
User: 'it should be in the romsey area'
System: 'Are you looking for somewhere near a particular venue? For example, Christ's College, the Regency Gallery, or Trinity College.'
User: 'no'
System: 'The Royal Standard, which is in the Romsey part of town, is an outstanding restaurant. It's in the cheap price range.'
User: 'what is the phone number'
System: 'The phone number of the Royal Standard is 01223902175.'
User: 'what type of food do they serve'
System: 'The Royal Standard serves indian food.'
User: 'thank you goodbye'


Output: Cheap


Input: Consider 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, or a pub.'
User: 'what is an expensive pub'
System: 'There is no pub in the expensive price range.'
User: 'um what is an expensive pub'
System: 'There is no pub in the expensive price range.'
User: 'um'
System: 'Are you looking for somewhere near a particular venue? For example, Cafe Jello, Hughes Hall, or Magdalene College.'
User: 'what is a pub food restaurant thats expensive'
System: 'There is no pub in the expensive price range.'
User: 'okay whats a moderately priced pub food restaurant'
System: 'Can I help you with anything else?'
User: 'what is a moderately priced pub'
System: 'The Alma, which is in the moderate price range, is a great pub.'
User: 'whats the address'
System: 'The Alma is on Russell Court. I am sorry but there is no information on its area.'
User: 'what is the phone number'
System: 'The phone number of The Alma is 01223316722.'
User: 'thank you goodbye'


Output: Expensive


Input: Consider 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 seafood restaurant'
System: 'Are you looking for somewhere near a particular venue? For example, Clare Hall, Magdalene College, or the People's Portraits Exhibition.'
User: 'background noise'
System: 'Loch Fyne is a great restaurant and it serves seafood.'
User: 'is it expensive'
System: 'Loch Fyne, which serves seafood, is a great restaurant. It's in the expensive price range.'
User: 'what is the address'
System: 'Loch Fyne is on 37 Trumpington Street.'
User: 'what is the phone number'
System: 'The phone number of Loch Fyne is 01223902103.'
User: 'how much does it cost'
System: 'Loch Fyne is a great restaurant. The price for main courses ranges from 9 pounds to 20 pounds.'
User: 'thank you good bye'



Output: Expensive