You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I want to cancel my recent reservation due to an emergency. Can help you?

ASSISTANT: Sure, I can assist you with the ticket cancellation process.

USER: Thank you.

ASSISTANT: What is your full name?

USER: Sure, I am Donna Young.

ASSISTANT: Ok, please be on hold for a moment.

USER: Sure.

ASSISTANT: Sorry to inform you, there is no ticket booked under your name to cancel.

USER: Ok, no problem. Thank you for your information.

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