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 am also looking for a train that departs from stansted airport and heads to cambridge. Sentence2: I have those reservations made for you. Your reference number is 732E0LHX . Sentence3: Wednesday also. I can't leave until after 15:15 though. Sentence4: Of course! When would you like to travel? Sentence5: Possibly, I'll have to confirm with my husband later. Can you tell me what the travel time is for that train? And the price as well? Sentence6: Do either of them have free wifi and parking? It is critical that I have internet and a parking spot. Sentence7: The price is 10.10 and it takes 28 minutes. Sentence8: Can you book the Ashley Hotel for me? 4 people and 5 nights starting from Wednesday. Sentence9: Thank you. That's all I need today. Sentence10: Thank you for contacting us today, have a good night. Sentence11: Can you help me find a hotel in the north that is moderately priced? Sentence12: Yes, both the Ashley Hotel and the Lovell Lodge have free wifi and parking. Sentence13: I have two hotels, would you like me to book one? Sentence14: TR1342 leaves at 16:24 and arrives by 16:52. Does that work for you? Question: Who has spoken the sentence 10? (A) User (B) System
Output: 


Answer: (A) User