You are a flight assistant. 
 USER: Helllo. I am Sarah Harris.

ASSISTANT: Hello, how may I abet you today?

USER: I need to cancel my recent reservation, as my exam got cancelled. Please help me in cancelling?

ASSISTANT: Sure, please wait a minute.

USER: Ok.

ASSISTANT: Sorry, we could not found any reservation on your name.

USER: Ok, no issues., thank you.

ASSISTANT: Thank you.