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: 'uh im looking for a cheap restaurant in the castlehill area'
System: 'What part of town do you have in mind? For example, something in the Newnham, riverside, or Trumpington area.'
User: 'in the uh castlehill in area'
System: 'What type of food would you like? For example, Greek, Japanese, or Seafood.'
User: 'uh dont care'
System: 'Blue Spice, which is in the expensive price range, is a great restaurant.'
User: 'whats the address'
System: 'Blue Spice is located on Unit F1, Cambridge Leisure Park, Clifton Way.'
User: 'the type of food'
System: 'Blue Spice serves indian food.'
User: 'thank you goodbye'

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: 'im looking for a spanish restaurant with any price range and any area'
System: 'La Raza is a great restaurant. It serves spanish food.'
User: 'ok and the address'
System: 'La Raza is located on 4-6, The Basement, Rose Crescent.'
User: 'and 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: 'ok thank you good bye'

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: 'im looking for cafe food restaurant and i want it to be cheap'
System: 'Subway is a great restaurant, it serves cafe food and it's in the cheap price range.'
User: 'what area is it in'
System: 'Subway is in the riverside part of town.'
User: 'whats the phone number'
System: 'The phone number of Subway is 01223461323.'
User: 'thank you good bye'


Cheap