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: I have a lot to do there, any specific types of attractions you would prefer? Sentence2: The train departs from Broxbourne at 19:32 and travels for 60 minutes. The total would be 14.32 pounds. Sentence3: Okay. Enjoy your journey. Sentence4: That is all for today. Thank you. Sentence5: Yes, the entrance fee is 5 pounds, and they can be reached by phone at 07782218745, is there anything else that I can assist with? Sentence6: I am looking for something to do in Cambridge, can you help me find something? Sentence7: I would like to go to a nightclub. Sentence8: I also need a train that departs from Broxbourne and arrives by 21:00 on Saturday at Cambridge. Sentence9: May I have the phone and please tell me how much it costs to get in. Sentence10: What time does the train depart from Broxbourne, and how long is the travel time? Also, do you know how much it would be? Sentence11: There are 6 night clubs in the city centre. I would recommend club salsa which is located at 1 station road. Sentence12: Is there anything else I can help you with? Sentence13: Thank you for the information. Sentence14: TR4967 arrives by 20:32 , would you like me to book you passage? Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User