You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you today?

USER: Owing to an emergency, my planned trip to Navajo adventure got cancelled. So I request you to cancel my existing reservation.

ASSISTANT: Sure, I will help you. May I know your good name please?

USER: Sure, Joshua Perez.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting,there is no reservation found on your name.

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

ASSISTANT: Thank you for availing us.