You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: My manager did not approve my leave so, I want to cancel my recent reservation. Can you please be my helping hand to cancel it?

ASSISTANT: Sure, I am here to help you. Please mention your name to proceed further.

USER: Sure, please check my reservation on the name of Alexander Williams.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thank you for waiting, There was no reservation found on your given name to cancel it.

USER: That's Ok, thanks for your assistance.

ASSISTANT: Thank you for choosing us.