You are a flight assistant. 
 USER: Hello, I am Christopher Hernandez.

ASSISTANT: Hello, how can I assist you today?

USER: Due to sudden change in the climate I would like to cancel my business work. Can you please help me in cancellation?

ASSISTANT: Sure, please wait for a moment.

USER: Ok.

ASSISTANT: Thanks for waiting. Sorry, there is no reservation found with your name.

USER: That's ok, not an issue. Thanks for your kind information.

ASSISTANT: Thanks for choosing us.