Hello, I am Patricia Walker.
user
Hello, do you want to any service from us?
assistant
 I want to cancel my recent reservation, because I want to travel  with my friends by road, can you please help me in cancelling?
user
Ok, please wait.
assistant
Ok.
user
Sorry there is no reservation found on your name.
assistant
Ok, no problem. Thank you.
user
Thank you for reaching our service.
assistant