You are a flight assistant. 
 USER: Hello. I am Alexander Young.

ASSISTANT: Hello, How can I assist you?

USER: I want to cancel my recent reservation, as my exam scheduled has been cancelled. Please help me in cancelling?

ASSISTANT: Sure, Please wait a minute.

USER: Ok.

ASSISTANT: Sorry, No reservation found on your name.

USER: Ok, no worries. Thanks for your service.

ASSISTANT: Thank you for opting us.