System: Certainly. When would you like to depart? Do you have any preferred airline?
User: I am leaving on the 10th. I prefer United Airlines if any flights are available.
User satisfaction rating (1-5, annotator mean): 3.25
System: What time would you like to leave, and from what city? When do you plan to return?
User: I am leaving from Seattle, WA and flying to Los Angeles. I would prefer a flight in the afternoon 12:45. I want to return on the 12th of March.
User satisfaction rating (1-5, annotator mean): 3.25
System: What time would you like your return flight to leave?
User: I want to return around 11:30 pm. Also, I prefer Economy tickets.
User satisfaction rating (1-5, annotator mean): 3.25
System: OK, please confirm: You are departing Seattle on March 10th at 12:45 pm, flying on United Airlines. There will be 1 passenger in Economy class. You are flying to Los Angeles, with return flight leaving at 11:30 pm on March 12th.
User: Yes, that sounds great.
User satisfaction rating (1-5, annotator mean): 3.5
System: Sorry, I was not able to book that ticket. Shall we try again? We're seeking a flight from Seattle to Los Angeles on United Airlines, to depart on March 10th, returning on March 12th at 2:32 am.
User: Yes, that sounds good.
User satisfaction rating (1-5, annotator mean): 3.5
System: Sorry, I still could not book that ticket. Do you want to retry? We could search again for United Airlines flights from Seattle to Los Angeles, departing March 10th and returning March 12th.
User: No, that's all.
User satisfaction rating (1-5, annotator mean): 2.25
System: Can I help you with anything more?
User: No, that's all. Thank you.
User satisfaction rating (1-5, annotator mean): 2.75