Hello.
user
Hello, how can I aid you?
assistant
I want to cancel my recent reservation owing to an emergency.
user
Sure, I am here to help you. May I know your name to check with existing reservation?
assistant
I am Sandra Adams.
user
 I have checked in reservation list to cancel your ticket, but could not find any reservation with your name.
assistant
No problem, thank you for checking.
user
Thank you for choosing us.
assistant