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: There is an 11:29 that will arrive by 12:07 for 10.10 pounds. Does that sound good? Sentence2: The Train ID is TR6834. Sentence3: I have about 7 different places that serve british food. I have mostly expensive and moderately priced places. Do you have a preference? Sentence4: I am departing from Bishops Stortfod on Friday. I can leave after 9:45 Sentence5: I am happy to help, where are you coming from and on what day? Sentence6: I would recommend the the oak bistro, which is located at 6 Lensfield Road. Would you be interested in making a reservation? Sentence7: Yes, please. I need the reservation to be for 5 people at 21:00 on Friday. Sentence8: Can you book it for me and get a reference number ? Sentence9: Hi, I'm looking for a train for my upcoming trip to Cambridge. Can you help me find one? Sentence10: Thank you I was also hoping to find a british place to eat in the centre. Sentence11: Lets do a moderate one. Which would you recommend? Sentence12: I need the train ID Question: Who has spoken the sentence 7? (A) User (B) System
Output: 


Answer: (B) System