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: I will be going to Norwich this Thursday. Sentence2: I am looking for a train that will leave after 14:00 and should depart from cambridge. Sentence3: What's the entrance fee, address, and phone number? Sentence4: Thank you for choosing the help desk. Good Bye Sentence5: I'm sure we can find what you're looking for. Where will you be traveling to? Sentence6: Hi, can you suggest some tourist sites to visit in Cambridge? Sentence7: Christ's college is free to enter. It's located on saint andrew's street, and their phone number is 01223334900. Is there anything else I can help you with? Sentence8: Christ's College is on Saint Andrew's Street in the centre. It is lovely. Sentence9: Yes, I'd love to visit a college. Is there a nice one in the city centre? Sentence10: There are 79 tourist sites listed in Cambridge. What type of attraction are you interested in seeing? Sentence11: How about the TR5190 train? It leaves Cambridge at 14:36 and arrives in Norwich at 15:55. Sentence12: That sounds perfect, that's all that I needed to know, thank you for your help! Question: Who has spoken the sentence 10? (A) User (B) System
Output: 


Answer: (A) User