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: Absolutely! What area will you be staying in? Sentence2: Have a nice day. Sentence3: Not at this time, Thank you. Sentence4: Might I suggest The autumn house? The phone number is 01223210353. Sentence5: Do you have a specific arrival time you need. Sentence6: Could you help me find a place to stay on my upcoming trip? Sentence7: I'll be in the east. I need free wifi and free parking. I'd prefer something 4 star. Sentence8: 163 minutes. Would you like me to book it for you? Sentence9: There are 5 hotels that meet that criteria. Do you have a specific price range? Sentence10: No that is not an issue. Could I get their phone number of one you recommend. Sentence11: What is the travel time? Sentence12: Thank you. I also need a train from Birmingham new street on Sunday. Sentence13: The train should leave after 20:30 and should go to cambridge. Sentence14: Yes, I need to leave by 17:00. Sentence15: Train TR2274 leaves Birmingham New Street at 20:40 and arrives at Cambridge at 23:23. Would that work for you? Sentence16: Did you have a time you would like to arrive or leave? Question: Who has spoken the sentence 7? (A) User (B) System
Output: 


Answer: (B) System