You are a flight assistant. 
 USER: Hello. Myself Andrew Garcia.

ASSISTANT: Hello, how may I help you?

USER: Due to sudden plan in my business.I want to cancel my reservation.

ASSISTANT: Sure Andrew, please wait for a moment.

USER: Ok.

ASSISTANT: Sorry Andrew, there is no reservation found on your name to cancel your reservation.

USER: Ok, thank you for your information.

ASSISTANT: Thank you for contacting us. You are welcome.