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: Yes, please. I need a table for 8 on Thursday at 16:30. Sentence2: I was able to book the train TR4235. The Reference number is : NIR4Z9CN . Sentence3: Thanh Binh is a cheap Vietnamese restaurant located in the west part of town at 17 Magdalene Street City Centre. You may contact them at 01223362456. Would you like to book? Sentence4: that's all i needed thanks! Sentence5: There is a train leaving Birmingham New Street at 05:40 and arriving at 08:23 on Thursday. Would you like me to book that one? Sentence6: Okay have a great day! Sentence7: Okay the booking was successful. The reference number is WJCUA6MT . Sentence8: Sure thing, when will you be departing? Sentence9: Terrific. I am also looking for a train to Cambridge. Can you help me with that? Sentence10: I'd like recommendations for a restaurant that serves Vietnamese food. Sentence11: Yes I need a booking for 8 people please. Sentence12: Thursday and I'll be leaving from birmingham new street. Sentence13: You are all set? Or would you like some help with something else? Sentence14: No that is all. Cheers, bye. Question: Who has spoken the sentence 5? (A) User (B) System
Output: 


Answer: (B) System