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: 'i would like to find a coffee shop'
System: 'What kind of price range are you looking for? For example, cheap, expensive, or free.'
User: 'serving itailian food'
System: 'Are you looking for somewhere near a particular venue? For example, Churchill College, Magdalene College, or the Michaelhouse Centre.'
User: 'and it should have expensive price range'
System: 'Caffe Nero, which serves italian food, is a great cafe. It's in the expensive price range.'
User: 'any would do'
System: 'Are you looking for somewhere near a particular venue? For example, Clare College, or the Regency Gallery.'
User: 'i want to know'
System: 'What part of town do you have in mind? For example, something in the Chesterton, New Chesterton, or Romsey area.'
User: 'i want to know the phone number'
System: 'The phone number of Caffe Nero is 01223307728. The price for main courses ranges from 3 pounds 50 to 3 pounds 85 and the price for a cappuccino is 2 pounds 15.'
User: 'new chesterton'
System: 'There is no cafe in the New Chesterton area.'
User: 'nic uhm unintelligible'
System: 'There is no cafe in the New Chesterton area.'
User: 'post code'
System: 'Caffe Nero is in the area with the postcode CB2 3PA.'
User: 'post code'
System: 'Caffe Nero is in the area with the postcode CB2 3PA.'
User: 'nice thank you and have a great day'
System: 'Caffe Nero is an outstanding cafe.'
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: 'sil'
System: 'What kind of venue are you looking for? For example, a pub, or a restaurant.'
User: 'expensive restaurant in trumpington area'
System: 'What type of food would you like? For example, pub, American, or Greek.'
User: 'expensive restaurant in trumpington area'
System: 'What type of food would you like? For example, Greek, Middleeastern, or Vegetarian.'
User: 'expensive restaurant in trumpington area'
System: 'What type of food would you like? For example, pub, English, or Italian.'
User: 'i dont care'
System: 'The Oak Bistro, which is in the Trumpington part of town, is a great restaurant.'
User: 'english'
System: 'The Oak Bistro is located on 6 Lensfield Road.'
User: 'whats the address'
System: 'The Oak Bistro is located on 6 Lensfield Road.'
User: 'whats the phone number'
System: 'The phone number of The Oak Bistro is 01223323361.'
User: 'th whats the phone number'
System: 'The phone number of The Oak Bistro is 01223323361.'
User: 'whats the price'
System: 'The Oak Bistro is a great venue. The price for main courses ranges from 11 pounds 50 to 17 pounds 75.'
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: 'yes im looking for a cafe food restaurant in the cheap price range'
System: 'Subway, which serves cafe food, is a great restaurant. It's in the cheap price range.'
User: 'background noise'
System: 'Subway is an outstanding restaurant, it serves cafe food and it's in the cheap price range.'
User: 'can i have the address and postcode'
System: 'Subway is located on 40-42 Mill Road and it's in the area with the postcode CB1 2AD. The price for main courses ranges from 1 pound 99 to 5 pounds 60.'
User: 'thank you good bye'


Ex Output:

Cheap