You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello,.

USER: I am Mark King.

ASSISTANT: How can I assist you?

USER: Please cancel my recent reservation, As I need to stay back in my place.

ASSISTANT: Sure, please hold on.

USER: Ok.

ASSISTANT: Thanks for holding on, there is no reservation found on your name.

USER: Ok, no problem. Thank you.

ASSISTANT: Thanks for approaching us, hope to serve you again.