Hello.
Hello, how can I assist you today?
Actually I made a earlier reservation to go for a trip with my friends, but heavy work load in office I want to change my reservation.
Sure, I will help you with that.
Thank you.
  On what name, do I need to check your reservation status?
I am Samuel Edwards.
Please wait a moment.
Sure.
Thank you for waiting. I have checked in reservation list to change your ticket, but could not find any reservation with your name.
No problem. Thank you for the information.
Thank you for reaching us.