TASK DEFINITION: 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.
PROBLEM: 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: 'looking for an expensive indian restaurant'
System: 'Blue Spice is an outstanding restaurant, it serves indian food and it's in the expensive price range.'
User: 'breathing sil'
System: 'Blue Spice is a great restaurant, it serves indian food and it's in the expensive price range.'
User: 'breathing sil'
System: 'Blue Spice is an outstanding restaurant. It serves indian food. It's in the expensive price range.'
User: 'what is the telephone number'
System: 'The phone number of Blue Spice is 01223413337.'
User: 'what is the area breathing'
System: 'Blue Spice is in the Girton part of town.'
User: 'what is the area'
System: 'Blue Spice is in the Girton part of town.'
User: 'thank you good bye'


SOLUTION: Expensive

PROBLEM: 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 can i get an expensive retaurant around castle hill'
System: 'What type of food would you like? For example, Mexican and Tex Mex, French, or Seafood.'
User: 'uh seafood'
System: 'Loch Fyne, which serves seafood, is a great restaurant. It's in the expensive price range.'
User: 'uh can i get a phone number please'
System: 'The phone number of Loch Fyne is 01223902103.'
User: 'breathing ok thank you goodbye'


SOLUTION: Expensive

PROBLEM: 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 an italian restaurant expensive please'
System: 'The Wrestlers is an outstanding restaurant, it serves thai food and it's in the expensive price range.'
User: 'italian food'
System: 'The Sorrento, which serves italian food, is a great restaurant. It's in the expensive price range.'
User: 'may i have the address and the phone number'
System: 'The Sorrento is on 196 Cherry Hinton Road and its phone number is 01223243533.'
User: 'okay thank you goodbye'


SOLUTION:
Expensive