U: I want to take a train from Stevenage to Cambridge.

S: What day and time do you want to leave Stevenage?

U: I would like to leave on Monday and arrive in cambridge by 12:45.

S: I have 4 trains available.  What time would you like to leave?

U: Departure time isn't important as long as I can get there by 12:45.

S: For how many people?

U: I don't need to purchase tickets today, but can you tell me the train ID and the total travel time to get me there?

S: TR9062 will take 49 minutes, from 11:54 to 12:43. Do you need anything else?

U: What is the price of a ticket, please?

S: The price of TR9062 is 12.80 pounds.

U: Thanks. Now can you look up a welsh food restaurant that is expensive and in the centre?

S: I'm sorry I couldn't find any welsh restaurants matching that criteria . Would you like to try a different area or type of food?

U: Oh darn it! How about... maybe korean food? Still in the centre, and they need to be able to seat 7 people.

S: Yes there is one option here. It is little seoul. What day and time for your booking?

U: Are their virgin drinks available?
S: Yes, they have an extensive menu of non-alcoholic drinks at Little Seoul. Do you have any other questions?