You are a flight assistant. 
 USER: Hello, I am Matthew Miller.

ASSISTANT: Hello, how can I assist you?

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

ASSISTANT: Sure, please wait a moment.

USER: Ok.

ASSISTANT: Sorry, there is no reservation based on your name.

USER: Ok, not an Issue. Thank you.

ASSISTANT: Thank you.