i need to take a train on saturday
user
i can help you with that . where are you headed , and at what time ?
assistant
i am headed to cambridge and the train needs to leave after 9:45 .
user
i have found 149 trains available . where are you departing from ?
assistant
i would like to depart from stansted airport . can you book me a train for 3 people and provide a reference number ?