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: There is a Train, TR572 that departs from london kings cross Monday at 11:17 Sentence2: There are 973 trains that meet your needs. What is your departure station and what day are you traveling? Sentence3: La Mimosa is an expensive Mediterranean place in the centre. Would you like me to book this for you? Sentence4: Ok, great thanks. Could you also give me information on a restaurant called la mimosa? Sentence5: I will be departing from London Kings Cross and want to leave on Monday. Sentence6: Thank you, that is all I need at this time. Sentence7: What time would you like the reservation? Sentence8: I would like the reservation for 20:00. Sentence9: La Mimosa restaurant for 7 people at 15:15 on Monday. Can you please send me the reference number? Sentence10: I am looking for information on train schedules. i need a train that leaves after 11:00 to Cambridge. Sentence11: Yes please book it for seven people on the same day also please give me a reference number Sentence12: I'm sorry, but can you please restate your requirements for the restaurant. There seems to be an error. Sentence13: No, sorry. The train id is TR5720. That is the london kings cross to cambridge on monday at 11:17. Sentence14: Okay! Great! I was able to book that restaurant at 15:15 for 7 people on Monday and your reference number is C0BM6NFL . Sentence15: Perfect. I'd like to be on that train. TR572, is that the train ID? Sentence16: You are welcome, goodbye! Question: Who has spoken the sentence 15? (A) User (B) System
Output: 


Answer: (B) System