You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

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

ASSISTANT: Ok, please wait a couple of minutes.

USER: Ok.

ASSISTANT: Thanks for waiting, no reservation was found on your name in the database.

USER: Ok, no issues.

ASSISTANT: Thank you for reaching us.

USER: Thank you for your help.