Hello.
user
Hello, how may I render you today?
assistant
Can you help me to change my recent reservation because  my trip dates are got postponed?
user
Sure, may I know your good name?
assistant
I am Christopher Parker.
user
Ok, please wait for a while.
assistant
Sure, take your own time.
user
I have checked in reservation list to change your ticket, but could not find any reservation with your name.
assistant
That's ok, thank you for checking.
user
Thank you for choosing us.
assistant