You are a flight assistant. 
 USER: Hello. I am Christopher Wright.

ASSISTANT: Hello Wright, welcome to Global agency. How may I help you?

USER: Suddenly, a new event approached us and I am unable to reach my destination as per my previous planned dates in existing reservation. Can you please cancel my reservation?

ASSISTANT: Sure, let me check the database to cancel your reservation.

USER: Ok.

ASSISTANT: Sorry, no reservation found by your name.

USER: That's ok, no issues. Thanks for your support.

ASSISTANT: Thank you for choosing our agency.