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 I've done that for you. Your reference number INEQVBMN . Sentence2: I have the TR3177 train leaving at 09:50 on Sunday, would that work? Sentence3: Thank you. I am also hoping to book a train to Cambridge from Ely. Sentence4: You're quite welcome, have a lovely day! Enjoy Cambridge! Sentence5: That is all I need today. Thank you for all of your help. Sentence6: its been our pleasure to serve you. Sentence7: As long as it's a museum in the west, I'm happy. Can you pick one and give me the postcode? Sentence8: How about TR0718? It leaves at 09:50. Sentence9: That would be perfect, can you book that for one and give me the reference number please? Sentence10: I actually need to leave on Saturday. Is there something leaving at a similar time? Sentence11: I need to leave for Ely sometime after 8:30 on Saturday. Sentence12: Yes there are many. Do you have a preference for type? Sentence13: cafe jello gallery is a museum in the west. Its postcode is cb30af. Sentence14: What day and time would you like to travel? Sentence15: Hi there. Can you help me find a museum in the west part of town? Sentence16: Thank you, have a good day! Question: Who has spoken the sentence 5? (A) User (B) System
Output: 


Answer: (B) System