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: Kohinoor is in postcode cb12as. Can I help you with anything else? Sentence2: I'd like a train to Cambridge on Friday Sentence3: I have train TR3292 leaving norwich at 8:16 and arriving in cambridge at 9:35. Would you like to make a reservation for this train? Sentence4: Booking was successful, the total fee is 123.2 GBP payable at the station. Reference number is : 9F6CEFRF . Sentence5: 74 Mill Road City Centre is its address Sentence6: What is the post code please? Sentence7: No. That's all I need for now. Thank you so much. Sentence8: Okay, well, let me know when you have that. Sentence9: That sounds good. Can you book it for 7 people? Sentence10: Yes I will book it for 7 people, and give you the reference number. Sentence11: Yes, I would need to leave after 08:00 please. Sentence12: Your welcome. Please contact us again. Sentence13: Perfect, thank you! I'm also looking for a restaurant called Kohinoor. Can you help me with that as well? Sentence14: Sorry, I will be leaving from Norwich. Sentence15: Can I just confirm your departure station please? Sentence16: I can get you a ticket that leaves london kings cross at 05:17 or do you need a later time than that? Question: Who has spoken the sentence 11? (A) User (B) System
Output: 


Answer: (B) System