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.

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 price range are you looking for? For example, free, or moderate.'
User: 'expensive'
System: 'Can I help you with anything else?'
User: 'expensive'
System: 'What kind of price range are you looking for? For example, cheap, expensive, or free.'
User: 'expensive'
System: 'Can I help you with anything else?'
User: 'expensive'
System: 'What kind of venue are you looking for? For example, a cafe, a pub, or a restaurant.'
User: 'noise sil'
System: 'What kind of venue are you looking for? For example, a pub.'
User: 'restaurant'
System: 'What part of town do you have in mind? For example, something in the Barnwell, Fen Ditton, or Newnham area.'
User: 'romsey'
System: 'Are you looking for somewhere near a particular venue? For example, Saint John's College, Sidney Sussex College, or Williams Art and Antiques.'
User: 'noise sil'
System: 'What part of town do you have in mind? For example, something in the Arbury, Newnham, or riverside area.'
User: 'romsey'
System: 'Can I help you with anything else?'
User: 'expensive restaruan in the romsey area'
System: 'The Backstreet Bistro is a great restaurant, it's in the Romsey part of town and it's in the expensive price range.'
User: 'what is the address'
System: 'The Backstreet Bistro is located on 2 Sturton Street.'
User: 'what is the phone number'
System: 'The phone number of the Backstreet Bistro is 01223306306.'
User: 'what is the price'
System: 'The Backstreet Bistro is a great venue. The price for main courses ranges from 10 pounds 95 to 14 pounds 25.'
User: 'thank you good bye'

Expensive

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: 'cafe'
System: 'What kind of venue are you looking for? For example, a cafe, or a restaurant.'
User: 'spanish restaurant'
System: 'What type of food would you like? For example, Northern european, Fastfood, or Thai.'
User: 'fresh'
System: 'What part of town do you have in mind? For example, something in the Castle Hill, Chesterton, or New Chesterton area.'
User: 'sil'
System: 'Are you looking for somewhere near a particular venue? For example, Magdalene College, Saint John's College, or Primavera.'
User: 'no'
System: 'What part of town do you have in mind? For example, something in the central, New Chesterton, or riverside area.'
User: 'no'
System: 'What part of town do you have in mind? For example, something in the Cherry Hinton, Fen Ditton, or Trumpington area.'
User: 'i dont care'
System: 'Blue Spice is an outstanding restaurant.'
User: 'trumpington'
System: 'The Oak Bistro is an outstanding restaurant and it's in the Trumpington part of town.'
User: 'price range'
System: 'The Oak Bistro, which is in the Trumpington part of town, is a great restaurant.'
User: 'cheap'
System: 'There is no restaurant in the Trumpington area in the cheap price range.'
User: 'cheap'
System: 'La Raza, which is in the cheap price range, is an outstanding restaurant.'
User: 'sil'
System: 'La Raza, which is in the cheap price range, is an outstanding restaurant.'
User: 'phone number'
System: 'The phone number of La Raza is 01223464550.'
User: 'phone number'
System: 'The phone number of La Raza is 01223464550.'
User: 'what is the price'
System: 'La Raza is an outstanding venue. The price for main courses ranges from 1 pound 95 to 13 pounds 95 and the entrance for adults is 4 pounds.'
User: 'what is the price'
System: 'La Raza is an outstanding venue. The price for main courses ranges from 1 pound 95 to 13 pounds 95 and the entrance for adults is 4 pounds.'
User: 'hum'
System: 'La Raza is on 4-6, The Basement, Rose Crescent.'
User: 'thank you goodbye'

Cheap

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 pub food restaurant and it should be in expensive price range'
System: 'Are you looking for a pub or a restaurant?'
User: 'pub'
System: 'There is no pub in the expensive price range.'
User: 'thank you good bye'


Expensive