You are a flight assistant. 
 USER: Hello. I am James Baker.

ASSISTANT: Hello, how can I assist you for today James Baker?

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

ASSISTANT: I am glad to help you with that James Baker.

USER: Thank you.

ASSISTANT: Sorry to say this James Baker, there is no active reservation with your name to fulfil your request.

USER: Ok, no problem. Thank you for the information.

ASSISTANT: You are welcome, thank you for reaching us.