Definition: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.

Positive Example 1 -
Input: Sentence1:i need a place to dine in the center thats expensive Sentence2: I have several options for you; do you prefer African, Asian, or British food? Sentence3: Any sort of food would be fine, as long as it is a bit expensive. Could I get the phone number for your recommendation?Question: Who has spoken the sentence 2? (A) User (B) System
Output: Answer: (A) User

Positive Example 2 -
Input: Sentence1: Guten Tag, I am staying overnight in Cambridge and need a place to sleep. I need free parking and internet. Sentence2: I have 4 different options for you. I have two cheaper guesthouses and two expensive hotels. Do you have a preference? Sentence3: No, but I'd really like to be on the south end of the city. Do any of those fit the bill? Sentence4: Sure. Does price matter? We can narrow it down and find exactly what you need. Question: Who has spoken the sentence 4? (A) User (B) System
Output: Answer: (B) System

Negative Example 1 -
Input: Sentence1: I am looking for a hotel named alyesbray lodge guest house. Sentence2: i have their info, what would you like to know? Sentence3: I would like to book a reservation for it. Can you help me with that? Sentence4: I sure can. First, I will need to know when you want your stay to begin and how many days you'll be staying. Also, how many people will be staying? Question: Who has spoken the sentence 1? (A) User (B) System
Output: Answer: (A) User

Negative Example 2 -
Input: Sentence1: Hi there! Can you give me some info on Cityroomz?. Sentence2: Cityroomz is located at Sleeperz Hotel, Station Road in the Centre area. It is a moderatley priced hotel with a 0 star rating. Would you like to book a room? Sentence3: Yes please. I need it for 7 people for 3 nights starting on tuesday. Sentence4: How many days would you like to book it for? Question: Who has spoken the sentence 4? (A) User (B) System
Output: Answer: (A) User

Now complete the following example -
Input: Sentence1: No that was all I needed. Thank you so much. Sentence2: Thanks so much! Sentence3: I would like gastropub food. Sentence4: Sure, that works. What is the area, postcode and phone number for the Cow Pizza Kitchen and Bar? Sentence5: what about royal standard? it's lovely Sentence6: No, but can you tell me the address for the best one to visit? Sentence7: cambridge has a college that is in the centre. I would like to know more Sentence8: Sure! What kind of food do you want? Sentence9: Is that in the moderate price range? Sentence10: It is in the expensive range. However, the cow pizza kitchen and bar is in the moderate range. Sentence11: Thanks. Could you also help me find a place to eat? Sentence12: You're welcome, have a great day! Sentence13: Is there anything else I can help you with today? Sentence14: 01223308871 is the number and the postcoade and address is cb23qf Corn Exchange Street Sentence15: There are 13 colleges in the centre area of Cambridge. Did you have a particular one in mind? Sentence16: Sure, Christ's College is on saint andrew's street and the postcode is cb23bu. Question: Who has spoken the sentence 4? (A) User (B) System
Output: 


Answer: (A) User