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: Okay what day will you be traveling? Sentence2: My favorite thing to do is look at the architecture at Holy Trinity Church. It's located on Market Street and it's free to get in. Does this work? Sentence3: Thank you. Let me know if I can help again. Sentence4: Okay can I get the reference number? Sentence5: Thank you. That is all I am inquiring about today. Sentence6: Perfect! I would like to book it for 4 people. Sentence7: No, not really. What's your favorite thing to do in the centre of town? Sentence8: I was able to book it, reference number is XYAQ9XA4 . Sentence9: Yes please book it for 4 people and give me the reference number. Sentence10: Would you like me to book it now? Sentence11: I found 44 different attractions near that location, is there something specific you're looking for? Sentence12: Can you help me find a place to go in the centre? Sentence13: I have a train to Kings Lynn that arrives at 12:58. Sentence14: I will be leaving from Cambridge on Sunday. Sentence15: Yes And I would like to find a train that arrives by 13:00 going to Kings Lynn. Sentence16: I will work on getting that booked and be right back with you. Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User