U: I need a train that leaves Cambridge on Thursday.

S: There are 202 trains leaving Cambridge on Thursday. Would you like to narrow your search by destination and time?

U: I am going to the stansted airport and I need to arrive by 21:30.

S: When are you leaving?

U: Departure time doesn't matter, I just need to arrive at the stansted airport by 21:30 on Thursday, and I need to depart from Cambridge.

S: I have 16 train departures fitting your preferences. They leave every :40 of the hour starting at 5:40 to 20:40, would you like me to book one of these?

U: Can I please have one at 19:40. I will get there by 21:30 correct?

S: Yes, the 19:40 train will arrive at 20:08. How many tickets would you like?

U: I don't need tickets at the moment, but I do need the price and train ID for that 19:40 departure, please.

S: The train id for that is TR9030 and the price is 10.10 pounds. Is there anything else you'd like help with today?

U: I'm also looking for a particular restaurant, it's called Frankie and Benny's.

S: I was able to find it, what information would you like on it?

U: Do they offer a good selection of non-alcoholic beverages?
S: Frankie and Benny's offers non-alcoholic drinks for patrons that some guest have found excellent while others have found it limited.  Is there anything else you would like help with today?