Can you help me find a train route from London, UK to Paris, France?
user
I would use a travel app or website, but I can search for train routes on my own.  Would you like me to look?
assistant
Yes can you find any?
user
It looks like there are many options, and we have an afternoon to decide.  Shall I search for the cheapest one?
assistant
No, just recommend the most direct route.
user
That would be to start in Paris, go through the Channel Tunnel, and end in London.  There is an all-day train from Paris to London that would let you arrive the next day.
assistant
Can you help me find a train route from London, UK to Paris, France?
user
I would use a travel app or website, but I can search for train routes on my own.  Would you like me to look?
assistant
Yes can you find any?
user
It looks like there are many options, and we have an afternoon to decide.  Shall I search for the cheapest one?
assistant
No, just recommend the most direct route.
user
Well, the cheapest route requires us to switch trains in Brussels, and the route has a stop in Antwerp.  Another option is a non-stop trip to Luxembourg, which is also the most direct route.
assistant
Can you help me find a train route from London, UK to Paris, France?