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: Thank you. You have bee very helpful. Have a nice day. Sentence2: I have 4 options here. I suggest adc theatre at park street. Is there anything else I could help you with? Sentence3: Are there any theatres to go to in the centre of town? Sentence4: Sorry it leaves at 09:16 and arrives at 10:35. Sentence5: Yes you are correct train TR5225 arrives at 13:35. Sentence6: Wait, I thought it arrived at 13:35, no? Sentence7: Sure, when would you like to leave? Sentence8: Yes perfect. What is the departure time on that train so I am not late. Sentence9: you are welcome, enjoy your stay. Sentence10: I need a train to cambridge from norwich on Sunday, please. Sentence11: Can you verify the departure time for that train again please? Sentence12: I need to arrive by 14:30, is there anything for that time? Sentence13: Yes can I get the address and fee and number for the theatre? Sentence14: Unfortunately there are no such venues. Can I help you with anything else? Sentence15: It's located on park street, postcode cb58as and their phone number is 01223300085. Unfortunately, their entrance fee is not available. Sentence16: The departure time is 12:16 PM Sentence17: TR5225 arrives at 13:35 if that would work for you? Sentence18: Thank you. I am also looking for a place to go in town. I'd like it to be located in the centre and be a mutliple sports Question: Who has spoken the sentence 11? (A) User (B) System
Output: 


Answer: (B) System