Hello,.
user
Hello, how may I serve you?
assistant
I want to cahnge my existing reservation due to postpone of my meeting so, can you please change my reservation?
user
Sure, let me know your good name please.
assistant
My name is Alexander Collins.
user
Ok, please wait a moment.
assistant
Ok.
user
Thank you for waiting. Unfortunately we didn't found any reservation by your name.
assistant
No problem, thank you for your information.
user
Thank you for reaching us.
assistant