Hello.
Hello, how can I render you today?
I just wants to change my reservation, as I rescheduled my journey dates. So, help me in this  with the name of Anna Robinson.
Sure, I will help you with that.
Ok.
Please wait a while.
Sure.
Thank you for waiting.
Fine.
I have checked in reservation list to change your ticket, but could not find any reservation with your name.
No problem. Thank you for your kind information.
Thank you for reaching us.