U: I need a train leaving from  london liverpool street.

S: I'll be happy to look that up for you. What day and time would you like to leave?

U: I would like to leave Saturday after 18:30.

S: Will you be traveling to Cambridge?

U: No I will be going to ely.

S: You are speaking to the Cambridge help desk, so we can only book a train if you are leaving from or heading to cambridge.  Cambridge to Ely?

U: No, going to cambridge and leaving london liverpool st. I am leaving saturday and want to leave sometime after 18:30

S: TR3940 leaves Liverpool St at 19:39 and arrives in Cambridge at 21:07.  Will that work for you?

U: How much will that ticket be?

S: The cost is 13.28 pounds. Would you like to make a reservation?

U: No that's fine. I also need to find a cheap restaurant.

S: Sure, I can help with that.  Is there a specific part of town you were looking for?

U: I don't really care where it's at, but I would prefer that it serve international food. Is there anything like that in town?

S: the missing sock would suit your needs. Can I book it for you?

U: Is the service great?
S: The service is really good here and is worth the trip. The employees there are extremely nice also.