Hi.
user
Hello.
assistant
Myself Charles Allen.
user
Charles, how may I help you?
assistant
I want to cancel my recent reservation due to sudden change in my trip.
user
Sure, please wait for a while.
assistant
Ok, take your own time.
user
Sorry, no reservation is available by your name.
assistant
That's ok, no problem. Thank you for checking.
user
Thank you for contacting us.
assistant