You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I made an earlier reservation to attend  a seminar, but I met with an small accident, so I can't attend seminar. Can you please cancel my reservation?

ASSISTANT: I am sorry to hear that, I will help you.

USER: Thank you.

ASSISTANT: Please help me with your name.

USER: My name is Linda Nelson.

ASSISTANT: Please allow me a minute.

USER: Sure.

ASSISTANT: Linda Nelson, I am really sorry to inform you that there is no booking found on your name.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us. Have a great time.