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: anytime after 19:00 Sentence2: Yes I am looking for a attraction called holy trinity church. Sentence3: Do you have the address of holy trinity church? Sentence4: I would like to leave on Saturday. Sentence5: Yes. I would like to book for 3 people and will need a reference number. Sentence6: That's all I need. Thank you. Sentence7: Holy Trinity Church is located on Market St in postcode cb23nz. It's free to get in. Did you have any further questions? Sentence8: Thank you. Can you help me find a train going to Leicester? Sentence9: I have a train that leaves at 19:21. What day would you like to travel? Sentence10: Yes, when would you like to leave? Sentence11: I booked you 3 seats on TR4708 leaving Cambridge on Saturday at 20:21, the total fee is 90.72 GBP and your reference number is FVMA8AAO . Sentence12: TR4708 departs cambridge at 19:21 and arrives at 21:06. Can I book that for you? Sentence13: I'm glad that I can be of help please have a great trip. Sentence14: Yes it's on Market street. Question: Who has spoken the sentence 8? (A) User (B) System
Output: 


Answer: (A) User