You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you?

USER: Owing to an emergency, my live concert got cancelled, so I want you to cancel my recent reservation.

ASSISTANT: Sure, I am here to help you. Can you please share your name to check your reservation status?

USER: Sure, Donna Lopez here.

ASSISTANT: Ok, please give me a moment.

USER: Sure.

ASSISTANT: Sorry, there is no reservation found on your name in our records.

USER: Ok, no issues. Thank you for your assistance.

ASSISTANT: Thank you for reaching us.