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. Is there anything else? Sentence2: The price per ticket is 60.08 pounds, how many travelers will be requiring tickets? Sentence3: You're very welcome. Please contact us again, if we can be of further assistance. Sentence4: jesus green outdoor pool is located between victoria road and the river, cb43px. Phone number is 01223302579. I'm afraid I don't have an entrance fee listed though. Sentence5: Train TR0686 will arrive at Birmingham New Street at 14:44. Sentence6: I need to leave after 11:15 on Sunday. Sentence7: Okay what is the price per ticket? Sentence8: Please let me know what time you would like to arrive or when you would like to depart. Sentence9: Not yet. What time will that arrive in Birmingham? Sentence10: which one would you like jesus green outdoor pool or kings hedges learner pool? Sentence11: No, that is all the help I need for today. Thanks again! Sentence12: Yes please. I'll also need the entrance fee, post code and address. Sentence13: No tickets yet. But I do need info on a swimming pool in the north. I you could recommend one? Sentence14: Train TR0686 will work for you. Would you like me to book you passage? Sentence15: The outdoor pool please. Sentence16: That's okay. That will be it. Thanks for all your help! Sentence17: I'm looking for a train departing from cambridge going to birmingham new street. Sentence18: Okay I have two to choose from. Would you like me to recommend one to you? Question: Who has spoken the sentence 16? (A) User (B) System
Output: 


Answer: (A) User