Hello.
user
Hello, how can I aid you?
assistant
 Owing to an emergency, I want to cancel my reservation. Can you please help me with that?
user
Sure, I am here to help you. May I know your name to check with existing reservation?
assistant
Jacob Jackson here.
user
 I have checked in reservation list to cancel your ticket, but could not find any reservation with your name.
assistant
Thank you for the help.
user
Thank you for choosing us.
assistant