You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: Linda Johnson here.

ASSISTANT: Nice meeting you Linda.

USER: Owing an emergency, I want to cancel my reservation.

ASSISTANT: Sure, I can help you, please wait for a while to check it.

USER: Ok.

ASSISTANT: Sorry Linda, as per your information there is no ticket found to cancel it.

USER: It's ok.

ASSISTANT: Thank you for reaching us, have a nice day.

USER: Thank you for checking.