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.

Q: 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: 'can i have an expensive greek restaurant'
System: 'What kind of price range are you looking for? For example, cheap, expensive, or free.'
User: 'noise sil'
System: 'What kind of price range are you looking for? For example, cheap, expensive, or moderate.'
User: 'expensive'
System: 'The Varsity, which serves greek food, is a great restaurant. It's in the expensive price range.'
User: 'can i have the address'
System: 'The Varsity is located on 35 Saint Andrew's Street.'
User: 'can i have the phone number'
System: 'The phone number of the Varsity is 01223356060.'
User: 'may i have the post code'
System: 'The Varsity is in the area with the postcode CB2 3AR.'
User: 'thank you good bye'


A: Expensive
****
Q: 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: 'um unintelligible'
System: 'What kind of venue are you looking for? For example, a cafe, or a restaurant.'
User: 'i am looking for a restaurant that serves pub'
System: '196 Meze Bar, which is in the Romsey part of town, is an outstanding restaurant.'
User: 'i am looking for a restaurant that serves pub food'
System: 'There is no restaurant in the Romsey area and serving thai food.'
User: 'lets start over please'
System: 'The Royal Standard, which is in the Romsey part of town, is a great restaurant.'
User: 'unintelligible'
System: 'Would you like a thai food, or you don't care?'
User: 'no i would like pub food'
System: 'The Kingston Arms, which is in the Romsey part of town, is a great restaurant. It serves pub food.'
User: 'what is its price range'
System: 'The Kingston Arms is in the cheap price range.'
User: 'what is its phone number'
System: 'The phone number of The Kingston Arms is 01223319414.'
User: 'what is its address'
System: 'The Kingston Arms is located on 33 Kingston Street.'
User: 'thank you goodbye'


A: Cheap
****
Q: 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: 'looking for a continental restaurant'
System: 'Are you looking for a pub or a restaurant?'
User: 'continental restaurant'
System: 'What kind of price range are you looking for? For example, cheap, or free.'
User: 'expensive'
System: 'What kind of price range are you looking for? For example, cheap.'
User: 'expensive'
System: 'What part of town do you have in mind? For example, something in the Barnwell, Castle Hill, or Romsey area.'
User: 'doesnt matter'
System: 'Alimentum, which serves continental food, is an outstanding restaurant. It serves french food and it's in the expensive price range.'
User: 'ah whats the phone number and area'
System: 'The phone number of Alimentum is 01223413000.'
User: 'and whats the area'
System: 'Alimentum is in the Addenbrooke's part of town.'
User: 'thank you good bye'


A:
Expensive
****