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: Alright. I booked your train leaving Cambridge at 19:34 and arriving in Peterborough at 20:24. The reference number is A8T38EJZ . Sentence2: Cityroomz is a moderately priced hotel with internet. Would that work for you? Sentence3: What day are you traveling, and to which station? Sentence4: Thanks, have a good day. Sentence5: You, too. Goodbye. Sentence6: Okay. Call us back if you need me to book anything for you. Sentence7: Yes that will work. Can I get the hotel's phone number? Sentence8: We have 30 such entries. Do you have a time you'd like to leave by? Sentence9: Sure thing, their number is 01223304050. Is there anything else I can help you with today? Sentence10: Any time is fine as long as I can book for four people. I also need the reference number, please. Sentence11: I'll be traveling on wednesday, and I will be go to peterborough. Sentence12: There are 9 different hotels that have free wifi that aren't guesthouses, do you have a price range in mind? Sentence13: No particular price range but I would like it to be in the centre. Sentence14: Thanks. I'm also looking for a hotel (not a guesthouse) with free wifi. Sentence15: No, that will be all, thank you for your help! Sentence16: I need a train departing from cambridge and arriving by 20:45. Question: Who has spoken the sentence 14? (A) User (B) System
Output: 


Answer: (A) User