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: 'noise sil'
System: 'What kind of venue are you looking for? For example, a cafe, or a restaurant.'
User: 'nosie sil'
System: 'What kind of venue are you looking for? For example, a pub, or a restaurant.'
User: 'noise im looking for a restaurant that serves pub food'
System: 'What type of food would you like? For example, Fusion, Japanese, or Turkish.'
User: 'im looking for a restaurant'
System: 'Would you like a trumpington area, or you don't care?'
User: 'id like pub food'
System: 'There is no restaurant in the Trumpington area and serving pub food.'
User: 'i dont care'
System: 'Can I help you with anything else?'
User: 'i dont care'
System: 'Blue Spice is a great restaurant.'
User: 'yes'
System: 'Let me confirm. You don't care about the location. You are looking for a venue.'
User: 'im looking for a pub food restaurant'
System: 'The Fountain Inn is a great restaurant and it serves pub food.'
User: 'im looking for a restaurant'
System: 'The Fountain Inn is an outstanding restaurant and it serves pub food.'
User: 'is it in the expensive price range'
System: 'The Fountain Inn is an outstanding venue. The price for main courses ranges from 4 pounds 95 to 7 pounds 95 and the price for a glass of wine ranges from 3 pounds to 4 pounds 50 and the price for a cheapest pint of beer is 2 pounds.'
User: 'is it in the expensive price range'
System: 'The Fountain Inn is a great venue. The price for main courses ranges from 4 pounds 95 to 7 pounds 95 and the price for a glass of wine ranges from 3 pounds to 4 pounds 50 and the price for a cheapest pint of beer is 2 pounds.'
User: 'id like to start over please'
System: 'Revolution, which serves pub food, is an outstanding restaurant. It's in the expensive price range.'
User: 'start over'
System: 'Revolution is an outstanding restaurant, it serves pub food and it's in the expensive price range.'
User: 'what is its phone number'
System: 'The phone number of Revolution is 01223364895.'
User: 'what is its phone number'
System: 'The phone number of Revolution is 01223364895.'
User: 'what is its post code'
System: 'Revolution is in the area with the postcode CB2 3DS.'
User: 'what is the post code'
System: 'Revolution is in the area with the postcode CB2 3DS.'
User: 'thank you good bye'


Ex Output:
Expensive


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 an expensive texmex restaurant'
System: 'Nanna Mexico, which serves mexican and tex mex food, is an outstanding restaurant. It's in the expensive price range.'
User: 'what is the price address and phone number'
System: 'Nanna Mexico is on 33 Regent Street and its phone number is 01223902150. The price for main courses ranges from 5 pounds 35 to 15 pounds 50 and the price for a cappuccino is 2 pounds 95.'
User: 'thank you goodbye'


Ex Output:
Expensive


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 cafe, a pub, or a restaurant.'
User: 'spanish restaurant'
System: 'What kind of price range are you looking for? For example, cheap, or free.'
User: 'restaurant'
System: 'What kind of price range are you looking for? For example, cheap, or moderate.'
User: 'cheap'
System: 'Let me confirm. You are looking for a venue in the cheap price range.'
User: 'cheap'
System: 'What type of food would you like? For example, Cafe food, Fastfood, or Greek.'
User: 'spanish'
System: 'Are you looking for somewhere near a particular venue? For example, All Saints Church, Cafe Jello, or the Ruskin Gallery.'
User: 'no'
System: 'What part of town do you have in mind? For example, something in the Addenbrooke's, Romsey, or Trumpington area.'
User: 'none'
System: 'What part of town do you have in mind? For example, Castle Hill, or Fen Ditton.'
User: 'none'
System: 'What part of town do you have in mind? For example, something in the Castle Hill, Newnham, or Romsey area.'
User: 'none'
System: 'What type of food would you like? For example, East asian, French, or Japanese.'
User: 'castle hill'
System: 'What part of town do you have in mind? For example, something in the Girton, New Chesterton, or Trumpington area.'
User: 'spanish'
System: 'There is no restaurant serving english food in the cheap price range.'
User: 'castle hill'
System: 'Let me confirm. You are looking for an english venue.'
User: 'goodbye'


Ex Output:

Cheap