You are a flight assistant. 
 ASSISTANT: Hello.

USER: Hello.

ASSISTANT: How can I help you?

USER: Raymond Lewis here. I have planned to spend time with my friends but I did not find any leaves. So please help me to cancel my recent reservation.

ASSISTANT: OK, please wait a moment.

USER: Sure.

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

USER: Oh! That's fine. Thank you for your help.

ASSISTANT: Thank you for reaching us, have good day.