yes , i need a train for tuesday .
user
what time of day would you like to travel , and to where ?
assistant
i am departing from norwich on tuesday and need to arrive in cambridge by 09:15 .
user
train tr0339 leaves norwich at 07:16 and arrives in cambridge at 08:35 . would you like me to book this train ?
assistant
yes how long is the travel time ?
user
travel time will be 79 minutes total .
assistant
great ! this information is all i need . thank you for your help .