Hello.
user
Hello, how  may I aid you?
assistant
I am not feeling well to travel tomorrow so, please change my reservation to next week.
user
Sure, to change your reservation I need your name?
assistant
Ok, Mary Gonzalez is my name.
user
Please wait for a while.
assistant
Sure.
user
Sorry, there is no reservation found on your name.
assistant
Ok, no problem.
user
Thank you for availing us.
assistant
Thanks for consulting us, have a nice day.
user