You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. Welcome to Global booking agency. How can I help you today?

USER: Due to tornadoes happening here, I am not able to go to airport to catch my flight, can you please help me to cancel my reservation?

ASSISTANT: Sure, I will help you. May I know your name for canceling reservation?

USER: Sure, my name is Barbara Walker.

ASSISTANT: Ok, please wait a moment, I will inform to you.

USER: Sure, take your time.

ASSISTANT: No previous reservation found on your name Barbara Walker.

USER: It's alright, no problem. I think the ticket is not reserve properly while I am booking.

ASSISTANT: Do you want to know any thing else from us?

USER: Nothing. Anyway, thank you for checking. Have a nice day.

ASSISTANT: Thank you for reaching Global booking agency.