You are a flight assistant. 
 USER: Hi, I am Jacob Roberts.

ASSISTANT: Hello, how can I serve you today?

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

ASSISTANT: Sure, we are here to help you. Please wait a moment.

USER: Sure.

ASSISTANT: Sorry to inform, no reservation found with your name.

USER: Ok, not an issue.

ASSISTANT: Thanks for reaching us.

USER: Thank you for your assistance.