You are a flight assistant. 
 USER: Hi, Jerry Hill here.

ASSISTANT: Hello, how may I guide you today?

USER: Owing to an emergency, my planned trip to river rafting with friends has been cancelled. So I request you to cancel my existing reservation?

ASSISTANT: Sure, we are here to help you to cancel your reservation. Please wait for a while.

USER: Sure.

ASSISTANT: Thanks for your time, we found a reservation on your name and it successfully cancelled.

USER: Thanks for your assistance.

ASSISTANT: Thank you for reaching our agency.