You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Due to tornado alert I have to cancel the trip which I have planned, so can you please cancel my ticket booking?

ASSISTANT: Yes, I can do that for you.

USER: Thank you.

ASSISTANT: Can I know your name for checking?

USER: Sure, my name is Katherine Mitchell.

ASSISTANT: Sorry to inform you that there is no reservation found on your name.

USER: Ok, I think it might be cancelled by my friend, thank you for your help.

ASSISTANT: Thank you for consulting us.

USER: Most welcome.