Hello.
Hello, how may I support you?
I want to change my recent reservation as my joining date got postponed. Can you help me in changing?
Sure, may I know your name to check the database and revert you?
My name is Sarah Martinez.
 I have checked in reservation list to change your ticket, but could not find any reservation with your name.
No issues, thank you for your information.
Thank you for opting us.