Hello.
user
Hello, how may I render you?
assistant
I am Michelle White. I want to change my existing reservation as my trip got postponed. Please help me out.
user
Sure, let me check the reservation list and revert you.
assistant
Ok, take your time.
user
 I have checked in reservation list to cancel your ticket, but could not find any reservation with your name.
assistant
No issues, thank you.
user
Thank you for picking us.
assistant