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: How about one with a 4-star rating? Sentence2: TR0767 leaves at11:50 on Friday morning, arriving 12:07. Price is 4.40 pounds. Would you like me to book a seat? Sentence3: I am happy to help, can you please give me some information on what you would like me to search for? Sentence4: I am planning a trip in Cambridge Sentence5: Okay. Great. Can I have the reference number please? Sentence6: Your reference number is IWVOH34O . Sentence7: I will complete that booking for you now. Sentence8: Yes please. Book it fror friday, 2 peopl. I'll need a reference number as well please. Sentence9: Ok. Thanks. Nothing further. Sentence10: We have 10 trains that leave every two hours starting at 5:50, any time preferences? Sentence11: The one in the west will be fine. I'll need the address, postcode, and if they have free internet. Sentence12: I'm looking for a place to stay in Cambridge in the expensive range with a 0 star rating that includes free parking. Sentence13: Sure their address kingfisher way, Hinchinbrook Business Park, Huntingdon and the postcode is pe296fl and they do have free wifi. Sentence14: Great, thanks! Also, will you please find me a train that goes to Ely, leaving on Friday? Sentence15: It was a pleasure to assist you. Have a good day. Sentence16: There are 2 hotels that meet your needs, one in the west and one in the city centre. Do you have a preference on where you'd like to stay? Sentence17: I need to leave after 10:30. Sentence18: I'm sorry, I'm not seeing any options for an expensive place to stay with a 0 rating and free parking. Should I look for something else? Question: Who has spoken the sentence 1? (A) User (B) System
Output: 


Answer: (B) System