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: When will you be traveling? Sentence2: Thanks. I am also looking for a train to Broxbourne from Cambridge. Sentence3: Train TR9531 leaves Cambridge at 16:01 and arrives in Broxbourne at 17:01. That is the last train of the day. Would you like to make a reservation? Sentence4: Yes, please. I need 7 tickets. Sentence5: Did you have a specific departure or arrival time in mind? Sentence6: The price range is on the expensive side and I would like if they provide free wifi and parking. I want the hotel to be located on the north side. Sentence7: I need to arrive by 18:00, please. Sentence8: Your reference number is 4HRLU45B, is there anything else you need? Sentence9: Yes, I would like to find a hotel in the south. Sentence10: We don't have any hotels that fit your criteria. Would you like to search for something a little different instead? Sentence11: I am leaving on Thursday. Sentence12: Thank you for using the Cambridge TownInfo centre. Goodbye. Sentence13: Hi, I could use some help with information on places to stay. Sentence14: Okay, the booking was successful. The reference number is FGOM35JV . Sentence15: No, that's all I need from you, Thanks! Sentence16: That sounds perfect. I need it for 3 nights and 7 people will be staying starting Monday. Sentence17: The Lensfield Hotel at 53-57 lensfield road is a fabulous 3 star hotel that offers internet and parking. Would you like me to book you a room there? Sentence18: Yes, I can help with that. What area would you like to stay in and what is your price range? Question: Who has spoken the sentence 16? (A) User (B) System
Output: 


Answer: (A) User