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: Thanks. I'm also looking for a museum in the area of west. Sentence2: Looking for a train that leaves from london liverpool street and goes to cambridge Sentence3: They are free! Can I help you with anything else? Sentence4: You are very welcome. Have a great time, and thanks for using Cambridge TownInfo centre. Sentence5: What day and time are you planning to leave? Sentence6: No, that is all I need help with at the moment. Thank you. Sentence7: Do you know if they have an entrance fee? Sentence8: There are 7 musuems located in the west. If you are interested in books, I would suggest the cambridge book and print gallery. Sentence9: TR5691 departs at 11:39. Will that work for your needs? Sentence10: I was able to book your ticket. Your reference number is RP24CQ0D . Is there anything else I can help you with? Sentence11: Can you give me the phone number and address? Sentence12: Sure. They are located at 49 newnham road and you can reach them at 01223694264. Sentence13: Yes, that works. I'd like to book that for one person. Sentence14: I would like to leave after 10:15 on tuesday. Question: Who has spoken the sentence 7? (A) User (B) System
Output: 


Answer: (B) System