Hi.
user
Hello,.
assistant
I am Mary Mitchell.
user
How shall I assist you?
assistant
 I want to cancel my recent reservation, because I want to travel  with my friends by road. Can you help me with it please?
user
Please wait for a while. I'm sorry, no reservation found by name Mary Mitchell.
assistant
That's ok.
user
Thanks.
assistant
Thank you for the response.
user