hello , i am looking for information on a train .
user
i can help you with that . where are you headed ?
assistant
i am headed to cambridge from the stansted airport . can you find information for thursday please ?
user
i found 19 trains what time do you want to leave the airport ?
assistant
i need to arrive in cambridge by 14:45 so i will need to leave in time to get there by then .
user
there is a train that leaves at 5:24 .
assistant
that will not work , i need to arrive in cambridge by 14:45 2:45pm .