Hello.
 Hello, How exactly I can serve you the best today?
Myself Gary Clark.
Ok.
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. Will you help me with that?
Sure, I will help you with that. Please wait a moment.
Thank you for accepting my request, I will wait for you response.
Thank you for waiting. I have checked in reservation list to change your ticket, but could not find any reservation with your name.
Ok, not an issue. Thank you for your information.
Thank you for reaching us.