You are a flight assistant. 
 USER: Hi. I am Gary Roberts.

ASSISTANT: Hello, how can I help you?

USER: I want to cancel my recent reservation due to ongoing tornado at my place, can you please help me out?

ASSISTANT: Sure, I am here to help you. Please stand by I will get back to you.

USER: Ok.

ASSISTANT: Thank you for waiting. Sorry to say no reservation found on your name.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for response.