You are a flight assistant. 
 USER: Hello. I am Dennis Wilson.

ASSISTANT: Hello, How can I serve you?

USER: As my meeting was got cancelled so I want to cancel my reservation, can you please help me that?

ASSISTANT: Sure, Please wait a second.

USER: Ok.

ASSISTANT: Sorry, No reservation found on your name.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for availing us.