You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.

Ex Input:
Sentence1: The address is 41 Warkworth Street. Can I help you with anything else today? Sentence2: Yes, I'm looking for a guesthouse with a star rating of 1. It should be in the city centre please. Sentence3: Enjoy your trip. Sentence4: Hi! I'm looking for someplace to go in the centre. Sentence5: No that was all I needed. Thank you, goodbye. Sentence6: I don't have any guesthouses that meet that criteria. Would you like me to try something else? Sentence7: Do you have any guesthouses with a star rating of zero? Sentence8: You are booked for a yellow audi. Your contact number is 07526986404. May I help you with anything else? Sentence9: What is your departure site? Sentence10: No not right now. What is their address? Sentence11: I'm sorry, we need a taxi departing from Saint Mary's Church by 3:15 going to the guesthouse. Sentence12: Yes, I do have one. The El Shaddai is in the centre and is cheap. It is 0 star rated and offers free parking and wifi. Do you need a room? Sentence13: It does not really matter can you suggest one? Sentence14: how about little saint mary's church? Sentence15: Okay, there's plenty to do in the city's centre. What kind of attraction are you interested in? Sentence16: I also need a taxi to get to little saint mary's church by 3:15. Sentence17: It is an architecture attraction it's located on little saint mary's lane postcode cb21qy. Is there anything else I can help you with? Sentence18: Sounds perfect. Is it architectural? Also, can I have the address with postcode? Question: Who has spoken the sentence 16? (A) User (B) System

Ex Output:
Answer: (A) User


Ex Input:
Sentence1: The address of Old Schools is Trinity Lane in the centre. Would you like more info? Sentence2: What kind of attractions are available in the centre? Sentence3: Could I get the address please? Sentence4: You're welcome! Enjoy your visit! Goodbye. Sentence5: How about any that are about architecture? Sentence6: Thank you that is all I needed. Sentence7: Yes, may I have the phone number and postcode? Also, is there an entrance fee? Sentence8: Are there any places that have multiple sports? Sentence9: There is the Holy Trinity Church on Market Street. It is free to get in. Sentence10: The phone number is 01223332320 and the entrance fee is free. The post code is cb21tt. Sentence11: Sorry there are no listings for multiple sports,can I check in another area? Sentence12: There are several. I like Old Schools on Trinity Lane. Great place to see. Question: Who has spoken the sentence 3? (A) User (B) System

Ex Output:
Answer: (B) System


Ex Input:
Sentence1: Okay what day would you like to travel? Sentence2: The TR0071 arrives at 14:01. Would you like to book tickets? Sentence3: I can help you with that. What day are you wanting to travel, and where is the destination? Sentence4: I said Thursday. Sentence5: That is all thank you goodbye Sentence6: I need to go to Broxbourne, I'll be leaving Cambridge. Sentence7: Yes please book for 8 people. I need the reference number. Also, I want information on a restaurant called Bangkok City. Sentence8: Your train is booked, ref #46PQOV6Y . Now, what would you like to know about Bangkok City? Sentence9: Their number is 01223354382. Is there anything else I can help you with? Sentence10: You're welcome. Thank you. Goodbye Sentence11: Are there any trains arriving by 15:15 on Thursday? Sentence12: yes how did you know? lol. Can I have their phone number please Question: Who has spoken the sentence 7? (A) User (B) System

Ex Output:

Answer: (B) System