Teacher: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.
Teacher: Now, understand the problem? Solve this instance: 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 need to find a cheap restaurant in the addonbrookes'
System: 'What type of food would you like? For example, Continental, or Italian.'
User: 'cheap'
System: 'What type of food would you like? For example, Cafe food, Chinese, or Fastfood.'
User: 'less expensive'
System: 'What type of food would you like? For example, Contemporary, English, or Seafood.'
User: 'less expensive'
System: 'La Raza, which is in the cheap price range, is an outstanding restaurant.'
User: 'english'
System: 'What type of food would you like? For example, Contemporary, International, or Spanish.'
User: 'address'
System: 'La Raza is on 4-6, The Basement, Rose Crescent.'
User: 'english'
System: 'There is no restaurant serving english food in the cheap price range.'
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: 'post code'
System: 'La Raza is in the area with the postcode CB2 3LL.'
User: 'post code'
System: 'La Raza is in the area with the postcode CB2 3LL.'
User: 'thank you good bye'

Student:
Cheap