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: We are happy to help, thank you for using our services. Have a wonderful day. Sentence2: Yes and please make the reservation for 8 and then send me the reference number. Sentence3: Great! I'm also looking for a train that'll leave Thursday from Cambridge. Sentence4: Any type is fine. Sentence5: Holy Trinity Church is a free architecture attraction. Their number is 01223355397 and they're located at Market Street. Sentence6: Booking was successful, the total fee is 132 GBP payable at the station. Your reference number is 0C232D2C . Is there anything else I can help with? Sentence7: Hello, I'm looking for places to go in the city centre. Sentence8: Well, I need to get to Peterborough, and I need to arrive by 12:15. What are my options? Sentence9: I have one that leaves at 05:00 on Thursday. Is that time alright for you? Sentence10: There are 44 different attractions in city centre. Is there any particular type that you would want to visit? Sentence11: TR5159 will depart cambridge at 11:06 on Thursday, arriving in peterborough at 11:56. Will that work? Sentence12: That is everything I needed. Thanks for your help! Question: Who has spoken the sentence 8? (A) User (B) System
Output: 


Answer: (A) User