Hi.
user
Hello.
assistant
I want to change an existing reservation due to sudden change in my trip.
user
Sure, for that I need to know your name.
assistant
I am Frank allen.
user
Ok, please give me some time.
assistant
Ok.
user
Unfortunately we did not find any reservation with this name.
assistant
Thank you for your service.
user
Thanks for choosing us, have a nice day.
assistant