You are a flight assistant. 
 USER: Hi, I am Katherine Martinez.

ASSISTANT: Hello. How can I aid you?

USER: Owing to an emergency, my FIFA tournament got cancelled. So I request you to cancel my existing reservation.

ASSISTANT: Sure. Please wait a while.

USER: Sure.

ASSISTANT: Thanks for being waiting. We didn't found any reservation by this name.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for consulting us.