You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I'm Samuel Mitchell.

ASSISTANT: Samuel, how can I assist you?

USER: I had planned for a business meeting, but it has been cancelled.Can you cancel my recent reservation?

ASSISTANT: Sorry, there is no reservation by your name.

USER: Ok, that's not a problem. Thank you for your help.

ASSISTANT: Thank you for approaching us.