Hello.
user
Hello, how may I aid you?
assistant
 I want to change my reservation, due to office work that my manager did not approved my leaves.
user
Ok.
assistant
Please aid me in changing the reservation with the name of Barbara Carter.
user
Sure, please wait a minute.
assistant
Ok.
user
Thanks for waiting, we did not find a reservation with your name.
assistant
No, problem. I will choose another option.
user
Thank you for reaching us.
assistant
Thank you for your help.
user