You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Kevin Green.

ASSISTANT: How may I help you?

USER: I want to cancel my reservation as my meeting was cancelled, can you please help me in that?

ASSISTANT: Sure, I will help you with the cancellation of flight reservation. Please wait.

USER: Ok.

ASSISTANT: I have searched online but I could not find your flight reservation to cancel it.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you.