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: Yes, there are several. Do you have a certain area in mind? Sentence2: That sounds great. Please book it for me. Sentence3: london liverpool street and should leave after 17:00, I need you to book it for 7 people and a reference number please Sentence4: TR7092 leaves at 17:59, will this be ok? Sentence5: i hope you enjoy staying around here Sentence6: I'm sure I will. Thanks again. Sentence7: How about a cheap place instead? Sentence8: There is one cheap hotel in the west. It is the Cambridge Belfry. Would you like me to book it for you? Sentence9: There are 7 choices in the cheap price range, are there any preferences? Sentence10: What is the reference number? Sentence11: Can you help me find a train from cambridge? Sentence12: Thank you. I'm also looking for a place to stay. I'd like a guest house that's expensive with a star of 4. Sentence13: I am travelling to london liverpool street on Monday Sentence14: Do you have a particular time you would like to travel? Sentence15: I will work on getting that booked for you. Sentence16: It was a pleasure assisting you. Have a great day. Goodbye. Sentence17: Booking was successful, your reference number is: QJTIXK8C . Is there anything else I can assist you with today? Sentence18: Yes thank you. I need a room for 7 people and 5 nights starting from Wednesday. Sentence19: are there any guesthouses? Sentence20: I have many trains available. What is your destination and day you would like to travel? Sentence21: I'm sorry there aren't any matches. Would you like to try something in the moderate price range? Sentence22: Okay, your booking was successful. The total fee is 116.2 GBP. You can pay this at the station. Your reference number is 2SDPSULR . Sentence23: Fantastic. That is all I have to request. Sentence24: The area is not an issue. I do want it to be an actual hotel. Question: Who has spoken the sentence 14? (A) User (B) System
Output: 


Answer: (A) User