Am looking for a train,it should depart from cambridge and should go to ely the train id is TR1709 and it leaves on friday I need to travel on wednesday and get there by 17:15. TrainID TR6745 leaves Cambridge at 15:50 and arrives at Ely at 16:07. It's the last Wednesday train. Can you give me the price? That train costs 4.40 pounds. Alright. I'll take it! That train will be perfect. Ok, how many seats would you like to book?