You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: Owing to an emergency, my planned trip with friends to Navajo adventure has been cancelled. So I want you to cancel my recent reservation?

ASSISTANT: Ok, please let me know your good name?

USER:  Sure, Sharon Collins here.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, no reservation found with your name to cancel your reservation.

USER: Ok, no worries at all.

ASSISTANT: Thanks for approaching us.

USER: Thanks for your service.