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 Q]: 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 want to find a mexican tex mex restaurant and it should be inexpensive'
System: 'Are you looking for somewhere near a particular venue? For example, Churchill College, Clare Hall, or the Regency Gallery.'
User: 'no'
System: 'Nanna Mexico, which serves mexican and tex mex food, is an outstanding restaurant. It's in the expensive price range.'
User: 'can i get the address phone number and the postcode'
System: 'Nanna Mexico is on 33 Regent Street, its phone number is 01223902150 and it's in the area with the postcode CB2 1AB.'
User: 'thank you good bye'

[EX A]: Expensive

[EX Q]: 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 A]: Expensive

[EX Q]: 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: 'need a moderately priced restaurant in the addenbrookes area'
System: 'Nando's Restaurant, Cambridge Leisure Park is an outstanding restaurant, it's in the Addenbrooke's part of town and it's in the moderate price range.'
User: 'what is the address'
System: 'Nando's Restaurant, Cambridge Leisure Park is on Unit G5, Cambridge Leisure Park, Clifton Way.'
User: 'phone number'
System: 'The phone number of Nando's Restaurant, Cambridge Leisure Park is 01223246568.'
User: 'and the postcode please'
System: 'Nando's Restaurant, Cambridge Leisure Park is in the area with the postcode CB1 7DY.'
User: 'thank you goodbye'

[EX A]:
Moderate