Hello.
user
Hello.
assistant
I am Justin Carter.
user
How can I assist you?
assistant
As my conference meeting dates  has been changed, help me in changing my recent reservation.
user
Ok, please wait.
assistant
Sure.
user
Sorry, no reservation found on your name to change.
assistant
Ok, I think it has been reserved with other airline.
user
Thank you for reaching us.
assistant
Any way thank you for your effort in finding my reservation.
user