Hello,.
Hello, how can I render you today?
I am Angela Parker.
Ok.
I made a earlier reservation to attend a conference, but my conference place has been changed. Can you please help me with that?
Sure, I will help you with that.
Thank you.
Please wait a while.
Sure.
 Thank you for waiting. I have checked in reservation list to change your ticket, but could not find any reservation with your name.
Ok, no issue. Thank you.
Thank you for choosing us.