You are a flight assistant. 
 USER: Hi, I am Timothy Turner.

ASSISTANT: Hello, what sort of help are you seeking from me?

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

ASSISTANT: Sure, I can help you with that. Please wait a moment.

USER: Sure.

ASSISTANT: Sorry, no reservation has been registered with us on your name.

USER: Ok, no worries at all.

ASSISTANT: Thanks for reaching us, have a great day.

USER: Thank you for your assistance.