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: Here you go, Primavera is a museum in the centre of town, they have free admission. Sentence2: tr7406 leaves at 12:32, how many tickets? Sentence3: The phone number is 01223357708. Sentence4: There are 19 trains that meet that criteria. Would you like to narrow it down by departure or arrival time? Sentence5: And postcode please like I asked before. Sentence6: it's called primavera. Sentence7: Thank you so much for your help. Sentence8: rad, thanks. i also need a train ticket Sentence9: Yes, can you give me some information? I am looking for a particular attraction. Sentence10: You're welcome. Have a great day! Sentence11: I need to travel on thursday. Sentence12: I would like tickets. Sentence13: The post code is cb21sj. Sentence14: Phone number and postcode please. Sentence15: You will not need tickets, as admission is free. Would you like the address or phone number? Sentence16: Could you tell me what the travel time is, please? Sentence17: Sure, I can assist you. What type of attraction were you interested in? Sentence18: I want to leave Broxbourne and go to Cambridge. Sentence19: What day and time would you like to travel? Sentence20: The travel time is 60 minutes. Sentence21: I have to leave after 12:30. Sentence22: Okay, where are you heading? Question: Who has spoken the sentence 13? (A) User (B) System
Output: 


Answer: (B) System