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 want to have moderately priced restaurant in the kings hedges area'
System: 'The Ranch is a great restaurant, it's in the King's Hedges part of town and it's in the moderate price range.'
User: 'may i have the address phone number and postcode'
System: 'The Ranch is on 100 Histon Road and its phone number is 01223322772. It's in the area with the postcode CB4 3JP.'
User: 'thank you goodbye'


Ex Output:
Moderate


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 romsey area'
System: 'Are you looking for somewhere near a particular venue? For example, the Broughton House Gallery, Cambridge Contemporary Art, or the Lynne Strover Gallery.'
User: 'the romsey area'
System: 'What type of food would you like? For example, Chinese take away, or Thai.'
User: 'any type of food'
System: 'What type of food would you like? For example, Northern european, Greek, or Turkish.'
User: 'any type'
System: 'What type of food would you like? For example, pub, Italian, or Vegetarian.'
User: 'cheap'
System: 'What type of food would you like? For example, Drinks and snacks only, Chinese, or Continental.'
User: 'continental'
System: 'What type of food would you like? For example, Turkish, or Vegetarian.'
User: 'continental'
System: 'What type of food would you like? For example, Northern european, French, or Traditional.'
User: 'northern european'
System: 'There is no restaurant in the Romsey area and serving northern european food.'
User: 'noise sil'
System: 'There is no restaurant in the Romsey area and serving northern european food.'
User: 'mexican'
System: 'Would you like a romsey area, or you don't care?'
User: 'romsey'
System: 'There is no restaurant serving mexican and tex mex food in the cheap price range.'
User: 'noise sil'
System: 'There is no restaurant serving mexican and tex mex food in the cheap price range.'
User: 'noise sil'
System: 'Would you like a mexican and tex mex food, or you don't care?'
User: 'fast food'
System: 'Would you like a mexican and tex mex food, or you don't care?'
User: 'fast food'
System: 'Would you like a cheap price range, or you don't care?'
User: 'fast food'
System: 'Would you like a cheap price range, or you don't care?'
User: 'cheap'
System: 'There is no restaurant in the Romsey area and serving fastfood.'
User: 'cheap'
System: 'There is no restaurant in the Romsey area and serving fastfood.'
User: 'noise sil'
System: 'Would you like a fastfood, or you don't care?'
User: 'northern european'
System: 'Would you like a romsey area, or you don't care?'
User: 'romsey'
System: 'There is no restaurant in the Romsey area and serving northern european food.'
User: 'noise sil'
System: 'Would you like a northern european food, or you don't care?'
User: 'italian'
System: 'Would you like italian or X food?'
User: 'italian'
System: 'There is no restaurant in the Romsey area and serving italian food in the cheap price range.'
User: 'chinese'
System: 'Would you like a romsey area, or you don't care?'
User: 'romsey'
System: 'Would you like italian or X food?'
User: 'chinese'
System: 'There is no restaurant in the Romsey area and serving chinese food.'
User: 'sil'
System: 'There is no restaurant in the Romsey area. There is no restaurant serving chinese food.'
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: 'yes i would like to find a mexican tex restaurant in the expensive'
System: 'Are you looking for somewhere near a particular venue? For example, Kettle's Yard, the Scott Polar Museum, or Trinity College.'
User: 'price range'
System: 'Are you looking for somewhere near a particular venue? For example, Castle Galleries, the Lynne Strover Gallery, or Old Schools.'
User: 'it does not matter'
System: 'What part of town do you have in mind? For example, something in the Castle Hill, Chesterton, or New Chesterton area.'
User: 'castlehill area'
System: 'Are you looking for somewhere near a particular venue? For example, Holy Trinity Church, the Lynne Strover Gallery, or Magdalene College.'
User: 'holy trinity church'
System: 'Are you looking for somewhere near a particular venue? For example, Castle Galleries, Holy Trinity Church, or Trinity College.'
User: 'holy trinity vhurch'
System: 'Are you looking for somewhere near a particular venue? For example, the Technology Museum, Corpus Christi, or Great Saint Mary's Church.'
User: 'it does not matter'
System: 'Would you like a mexican and tex mex food, or you don't care?'
User: 'mexican texmex'
System: 'Are you looking for somewhere near a particular venue? For example, King's College, Old Schools, or the Regency Gallery.'
User: 'i am looking for a mexican texmex restaurant in the expensive price range'
System: 'Are you looking for somewhere near a particular venue? For example, Little Saint Mary's, Pembroke College, or Sidney Sussex College.'
User: 'thank you goodbye'


Ex Output:

Expensive