I am  looking for a train.
Alright. Where are you headed?
I'm head to Leicester from Cambridge on Saturday.
What time are you planning to leave?
Anytime after 8:45. 
TR3371 leaves at 09:21 and arrives at 11:06. It is 30.24 pounds. Would you be interested in that?
I meant to say I want to leave after 20:45. 
Great, I have TR9209 that meets your criteria  and is 30.24 pounds. Would you like me to book it?
Yes, please. I booking for one person.
Pardon me, did you say you are traveling on Saturday or Sunday?
I am traveling on Saturday.
Okay, I have TR7610 that leaves at 21:21. The price is 30.24 pounds. Would you like me to book it?
Yes please, for one person.
Okay, booking was successful. Your reference number is MHMRVMR4. Anything else?
Nope, that's all. Thanks!
you are welcome, enjoy yourself.