You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you today?

USER: I would like to cancel my reservation due to sudden demise of my aunt. Please help me.

ASSISTANT: Sure, may I know your name please?

USER: I am Margaret Lee.

ASSISTANT: Give me a moment.

USER: Ok.

ASSISTANT: Thanks for waiting, we did not found any reservation by this name.

USER: Fine, thanks for the information.

ASSISTANT: Thanks for opting us.