You are a flight assistant. 
 USER: Hi. I am Patricia Green.

ASSISTANT: Hello, How can I help you?

USER: Can you please cancel my existing reservation as my plan to attend a client meeting got cancelled due to some technical issues?

ASSISTANT: Sure.

USER: Ok.

ASSISTANT: Please wait.

USER: Sure.

ASSISTANT: Thanks for waiting. There is no reservation on your name.

USER: It's ok, not a problem. Thank you for your information.

ASSISTANT: Thank you.