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: Thank you. I would also like a train leaving on Saturday going to Kings Lynn. Sentence2: There are a variety of restaurants to chose from. Would you like Indian, Chinese, British, International fare or a Gastropub? Sentence3: Oh you're in luck. I have one in the center called Nandos City Center. Would you like me to make a reservation for you? Sentence4: Have a safe trip. Sentence5: Yes. I'd like to book that for two. Could I get the reference number please? Sentence6: For how many people? Sentence7: There will be 2 people. Sentence8: Well, I have great news. There are several trains leaving from Cambridge on Saturday. Would you like to book tickets for you and how many? Sentence9: Yes. Please reserve for 2 people on Tuesday at 15:15. Sentence10: It has been booked. Your reference number is 1J07UJKY . Sentence11: We would like to try a Portuguese place. Is there one available? Sentence12: Thank for the help, goodbye! Sentence13: Okay, where are you departing from? Sentence14: I am departing from Cambridge. Sentence15: Yes please book 2 tickets. Sentence16: Would train TR6633 arrving at 21:58 work? Sentence17: I need some help finding a place in Centre to eat, can you look it up for me? Sentence18: Let's try and narrow this down some. What time do you want to depart or what time do you want to arrive by? Sentence19: That booking was successful and your reference number is JM0RL39I . Sentence20: I would like to leave after 20:45 Question: Who has spoken the sentence 17? (A) User (B) System
Output: 


Answer: (B) System