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: Can you book that train for five people? Sentence2: Can you help me find a place to stay that is moderately priced and includes free wifi? Sentence3: Ok, you have the rooms. Reference number is : HX250ZFS . Can I help you with anything else? Sentence4: Where are you leaving from? Sentence5: Great I also need a train going to cambridge on tuesday as well. Sentence6: Yes, I would prefer it to be in the north. Sentence7: Can you book a room at the Ashley for me? 5 people, 5 nights, and we'll arrive on Tuesday. Sentence8: A hotel please. I also need free parking. Sentence9: Okay the TR7598 leaves at 16:32 and arrives at 17:32. Sentence10: I'm leaving from Broxbourne. Sentence11: That narrowed it down a little bit. Would you prefer a guesthouse or a hotel? Sentence12: i just want to get there by 19:00 Sentence13: Did you have a departure or arrival time in mind? Sentence14: I sure can. That total charge is 89.5 GBP and the reference number is OTQM5TP5 . Sentence15: I have 2 hotels that have what you are asking for. Both are 2 stars and offer free parking and wifi. Ashley Hotel and the other is the Lovell Lodge. Sentence16: Great, thanks for all of your help today. I won't be needing any further help. Bye. Sentence17: No thank you that will be all Sentence18: i have many options for you. are you looking in a particular area? Question: Who has spoken the sentence 16? (A) User (B) System
Output: 


Answer: (A) User