You are a flight assistant. 
 USER: Hi, I am Nicholas Davis.

ASSISTANT: Hello, how may I assist you?

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

ASSISTANT: Sure, please hold on.

USER: Sure.

ASSISTANT: Thank you for your valuable time. No reservation found on your name.

USER: Ok, no worries at all. Thank you for your assistance.

ASSISTANT: Thank you for reaching us.