Hello.
user
Hello,  How can I support you today?
assistant
I am Michael Baker. As my destination is changed, I want to change my existing reservation. Can you help me in changing reservation?
user
Sure, I will help you with that.
assistant
Ok.
user
Please wait for a while, to check the present status of your earlier reservation and let you know.
assistant
Sure.
user
Thank you for waiting. I have checked in reservation list to change your ticket, but could not find any reservation with your name.
assistant
Ok, No problem.
user
Thank you for choosing us, Have a blissful day!.
assistant
Thanks for the information.
user