You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you today?

USER: I have a reservation to meet my project manager. Due to some issues appointment has been cancelled. Can you please cancel my recent reservation confirmed on the name of Nicole Johnson?

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, no reservation found with your name to cancel.

USER: Ok, no worries.

ASSISTANT: Thanks for approaching us.

USER: Thanks for your kind response.