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

ASSISTANT: Hello,. How can I assist you?

USER: As I want to meet my head officer urgently, I want to cancel my recent reservation. Can you please help me?

ASSISTANT: Sure, please wait a minute.

USER: Ok.

ASSISTANT: Sorry, there is no reservation found in your name.

USER: Ok, Thanks for the information.

ASSISTANT: Thank you for reaching us.