You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I want to cancel my recent reservation due to heavy rain fall, can you please help me with this?

ASSISTANT: Ok, may I know your name to check your reservation?

USER: My name is Charles Collins.

ASSISTANT: Sorry, there is no reservation found on your name to cancel it.

USER: No problem, thanks for your information.

ASSISTANT: Thanks for choosing us.