You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Kevin Walker.

ASSISTANT: How may I help you out?

USER: I need to cancel my reservation due to some tornado going on in my location, can you help me out?

ASSISTANT: Sure, I will help you in cancelling the ticket.

USER: Thank you.

ASSISTANT: Sorry, there are no reservations found.

USER: That's ok, no problem. Thank you for your information.

ASSISTANT: Thank you for reaching us.