hi , can you help me find a train leaving cambridge ?
user
i would be happy to help you find a train leaving cambridge . in order to better help you , can you please let me know where you are traveling to and what day you would like to leave .
assistant
i would like to go to cambridge on sunday .
user
just to clarify , are you leaving cambridge , or coming into cambridge ?
assistant
i am leaving birmingham new street , coming into cambridge .
user
there are 19 trains departing birmingham new street for cambridge on sunday . what s your preferred departure time ?
assistant
i can depart any time after 17:15 . what s the first train that leaves after this time ?
user
the tr5797 leaves birmingham new street at 17:40 . would you like me to book you a seat on that train ?
assistant
at what time will that train arrive ?