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: 'im looking for a cheap restaurant in the addenbrookes area'
System: 'The Peking Restaurant is a great restaurant, it's in the Addenbrooke's part of town and it's in the cheap price range.'
User: 'ah whats the address and postcode'
System: 'The Peking Restaurant, which is in the area with the postcode CB2 8NX, is on Unit 3, The Belvedere, Homerton Street.'
User: 'thank you good bye'


Ex Output:
Cheap


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: 'cheap restaurant'
System: 'What part of town do you have in mind? For example, something in the Cherry Hinton, Girton, or Trumpington area.'
User: 'romsey area'
System: 'What type of food would you like? For example, pub, Mediterranean, or Traditional.'
User: 'mediterranean'
System: 'There is no restaurant serving mediterranean food in the cheap price range.'
User: 'traditional'
System: 'There is no restaurant serving traditional food in the cheap price range.'
User: 'pub'
System: 'Would you like a cheap price range, or you don't care?'
User: 'cheap price range'
System: 'Are you looking for a pub or a restaurant?'
User: 'restaurant'
System: 'What type of food would you like? For example, East asian, Seafood, or Vegetarian.'
User: 'east asian'
System: 'There is no restaurant in the Romsey area and serving east asian food.'
User: 'i dont care'
System: 'There is no restaurant in the Romsey area and serving east asian food.'
User: 'cheap food'
System: 'Would you like a romsey area, or you don't care?'
User: 'romsey area'
System: 'Would you like an east asian food, or you don't care?'
User: 'i dont care'
System: 'The Royal Standard, which is in the Romsey part of town, is an outstanding restaurant. It's in the cheap price range.'
User: 'phone number'
System: 'The phone number of the Royal Standard is 01223902175. The price for main courses ranges from 4 pounds 75 to 7 pounds 50.'
User: 'post code'
System: 'The Royal Standard is in the area with the postcode CB1 3NL.'
User: 'thank you good bye'


Ex Output:
Cheap


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: 'im looking for a thai restaurant in the expensive price range'
System: 'The Wrestlers is a great restaurant, it serves thai food and it's in the expensive price range.'
User: 'what is the address'
System: 'The Wrestlers is on 337 Newmarket Road. The price for main courses ranges from 8 pounds 50 to 9 pounds 70 and the price for a cheapest pint of beer is 3 pounds 30.'
User: 'whats the phone number'
System: 'The phone number of The Wrestlers is 01223566554.'
User: 'and what is the post code'
System: 'The Wrestlers is in the area with the postcode CB5 8JE.'
User: 'thank you goodbye'


Ex Output:

Expensive