You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: Due to demise of grand father, I want to cancel my reservation. Can you help me with that?

ASSISTANT: Sure, may I know your name to proceed?

USER: Lisa Parker here.

ASSISTANT: I have found your reservation on your name, can I cancel it?

USER: Please cancel it.

ASSISTANT: Your reservation is cancelled.

USER: Thanks for your excellent service.

ASSISTANT: Thank you for choosing us.