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.

Example 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: 'yes i am looking for a moderately priced pub in the castlehill area'
System: 'Are you looking for a venue that allows children?'
User: 'im looking for a venue that has internet'
System: 'There is no pub with an internet connection in the moderate price range.'
User: 'is there moderately'
System: 'There is no pub with an internet connection in the moderate price range.'
User: 'price range pub in the castlehill area'
System: 'Would you like a moderate price range, or you don't care?'
User: 'a moderate price range pub in the castlehill area'
System: 'Would you like a true internet connection, or you don't care?'
User: 'i dont care'
System: 'Are you looking for a venue that allows children?'
User: 'no'
System: 'The Anchor, which is in the moderate price range, is a great pub.'
User: 'may i have the phone number'
System: 'The phone number of The Anchor is 01223353554. The price for main courses ranges from 6 pounds 50 to 11 pounds and the price for a cheapest pint of beer is 2 pounds 70.'
User: 'does it have internet'
System: 'The Anchor doesn't have any internet connection.'
User: 'thank you goodbye'

Example Output: Moderate

Example 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: 'a cheap restaurant in the city centre area'
System: 'What kind of price range are you looking for? For example, cheap, or moderate.'
User: 'i dont care'
System: 'Are you looking for somewhere near a particular venue? For example, Artspace, Holy Trinity Church, or Pembroke College.'
User: 'no'
System: 'La Raza is a great restaurant and it's in the central part of town.'
User: 'no'
System: 'La Raza, which is in the central part of town, is a great restaurant.'
User: 'whats the address'
System: 'La Raza is on 4-6, The Basement, Rose Crescent.'
User: 'whats the phone number'
System: 'The phone number of La Raza is 01223464550.'
User: 'cough'
System: 'La Raza is a great restaurant.'
User: 'cough'
System: 'La Raza is a great restaurant.'
User: 'cough'
System: 'La Raza is an outstanding restaurant.'
User: 'whats the price'
System: 'La Raza is a great venue. The price for main courses ranges from 1 pound 95 to 13 pounds 95 and the entrance for adults is 4 pounds.'
User: 'whats the price'
System: 'La Raza is an outstanding restaurant.'
User: 'thank you goodbye'
System: 'Can I help you with anything else?'
User: 'thank you goodbye'

Example Output: Cheap

Example 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: 'what is a cheap coffee shop'
System: 'The Cambridge Blue is an outstanding cafe and it's in the cheap price range.'
User: 'what is the phone number'
System: 'The phone number of the Cambridge Blue is 01223369222.'
User: 'what is the uh postcode'
System: 'The Cambridge Blue is in the area with the postcode CB2 1DB.'
User: 'thank you good bye'

Example Output:
Cheap

