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: Graffiti sounds good. I actually need that reservation for 5 people at 20:00 on Wednesday. Can I have the reference number for that? Sentence2: There are two trains that would work. One arrives at 07:07 and the other arrives at 01:07. Which one would you prefer? Sentence3: I would recommend Graffiti. It is a bit expensive, so if you want something moderately price there is also Saint Johns Chop House. Sentence4: Great, thanks! That's all I needed right now! Sentence5: Alright, I've booked a train for your group, the reference number is AOIMGBHK, and there will be an 83 GBP fee at the station. Sentence6: What time would you like these reservations? Sentence7: I need to find a British restaurant in West Cambridge. Sentence8: i can definitely do that, how many tickets would you like? Sentence9: No, can you recommend a favorite? Sentence10: I would also like a train departing from london liverpool street and arriving in Cambridge at 09:00 on the same day. Sentence11: Please book 2 tables for 8 people on friday also i need train tickets for 8 people. Sentence12: There are multiple options for you. To narrow them down what price range do you have in mind? Sentence13: Can you book the train that arrives at 07:07 that one would work great. I need the reference number as well. Sentence14: it's for the same group of people Sentence15: Booking was successful. The table will be reserved for 15 minutes. Reference number is : YYPPDY56 . anything else i could help you with? Sentence16: You're welcome. Have a great day. Question: Who has spoken the sentence 11? (A) User (B) System
Output: 


Answer: (B) System