You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I oblige you today?

USER: Owing to an emergency, I need to cancel my reservation. Can you help me with cancelling my reservation?

ASSISTANT: Sure, we are gleeful to help you for cancellation.

USER: Thank you.

ASSISTANT: To proceed further, May I know your name please?

USER: Sure, I am Justin Green.

ASSISTANT: Ok, please stand by.

USER: Sure.

ASSISTANT: Thank you for waiting. I have checked in reservation list to cancel your ticket, but could not find any reservation with your name.

USER: Ok, no problem. Anyway, thank you for checking.

ASSISTANT: Thank you for opting us. Have a blissful day!.