You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: Due to the sudden change in climate, my live concert got cancelled, so I want you to cancel my recent reservation.

ASSISTANT: May I know your name please?

USER: Sure, Mark Lopez here.

ASSISTANT: Sure, please wait for a moment.

USER: Sure.

ASSISTANT: Sorry, there is no reservation matching with your name in our portal.

USER: Ok, no issues at all. Thank you.

ASSISTANT: Thank you for reaching us.