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: Not at this time, can you tell me about places to go near the centre? Sentence2: sure! there are 44 attractions in that area. what do you like to do? Sentence3: Thanks, is there an entry fee for that? Sentence4: What's the price for that one? Sentence5: Okay, where will you be departing from? Sentence6: The price for that ticket is 23.60 pounds. Would you like to make a booking? Sentence7: your welcome, have a great day! Sentence8: I will depart from london kings. I would like to leave after 17:00 on wednesday. Sentence9: It doesn't matter can you recommend one? Sentence10: the address is 98 king street Sentence11: Broughton house gallery is a nice museum in the centre of town Sentence12: The TR6045 departing London Kings Cross for Cambridge on Saturday at 17:17 should work for you, would you like more information or to make a booking? Sentence13: No that's all thanks. Sentence14: Can I get the address please? Sentence15: Hey looking for a train to go to Cambridge. Want one that will leave on Wednesday. Sentence16: No, it's free! Is there anything else you need? Question: Who has spoken the sentence 8? (A) User (B) System
Output: 


Answer: (A) User