You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I want to cancel my recent reservation due to ongoing tornado at my source point. Can you help me with that?

ASSISTANT: Sure, may I know your name for checking?

USER: Sure, I am Jennifer Martinez.

ASSISTANT: Give me a minute.

USER: Ok.

ASSISTANT: Sorry, there is no reservation found under your name.

USER: Ok, no problem. Thank you for your help.

ASSISTANT: Thank you for opting us.