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: What day will you take the train? Sentence2: I will be going to cambridge and I can arrive whenever. Sentence3: I'd like to know the location of Clare Hall. Sentence4: enjoy your stay in Cambridge! Sentence5: Can I also get the phone number please? Sentence6: Do you have clare hall's address? Sentence7: Claire Hall is located on herschel road in the west side of town. Do you need more information? Sentence8: The TR5703 meets your criteria. Would you like to book tickets? Sentence9: That'll be all for today, thank you. Sentence10: Sure, where will you be going to, and on what day? Sentence11: Sure. Clare Hall is on Herschel Road. Sentence12: I will be leaving Ely on Sunday. Sentence13: Yes please, for 3 people Sentence14: Booking was successful, the total fee is 10.56 GBP payable at the station . Reference number is : TDBKS2EJ . Can i help with anything else today? Sentence15: Yes, I am looking for a train that leaves Ely and arrives by 16:30. Sentence16: Sure, their phone number is 01223332360. Anything else? Question: Who has spoken the sentence 9? (A) User (B) System
Output: 


Answer: (B) System