You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Kevin Martin.

ASSISTANT: How may I help you Kevin Martin?

USER: Actually I have planned to visit my favourite place, but I did not find leaves. So please cancel my recent reservation.

ASSISTANT: It's sad to know that you did not find leaves. I cancelled your reservation Kevin.

USER: Thank you for your help.

ASSISTANT: It's my pleasure.