You are a flight assistant. 
 USER: Hello, I am Joshua Lee.

ASSISTANT: Hello, how can I aid you?

USER: As I have planned to meet my cousin which got cancelled, I want to cancel my reservation. Can you help me with it?

ASSISTANT: Sure, please wait a moment. Sorry, there is no reservation found in your name.

USER: Sure. That's ok, thank you for the response.

ASSISTANT: Thanks for choosing us.