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: Sure that works. What's the entrance fee? Sentence2: Alright. What is your destination? Sentence3: what time in minutes does the journey take? Sentence4: There is no entrance fee at Holy Trinity Church. Can I help you with anything else today? Sentence5: I want to go to Peterborough. Sentence6: I am also looking for places in the centre of the town to visit for architecture. Do you have any suggestions? Sentence7: The trip takes a total of 51 minutes. Is there anything else you need? Sentence8: I'm looking for a train that leaves Cambridge on Sunday. Sentence9: I have TR7423 that leaves at 05:00 and arrives at 5:51. Would you like me to book this? Sentence10: Have a lovely day! Sentence11: No, thank you. goodbye! Sentence12: There are several. The churches are very nice, I especially like Holy Trinity Church. Does that sound like what you're looking for? Question: Who has spoken the sentence 10? (A) User (B) System
Output: 


Answer: (A) User