You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, How can I aid you today?

USER: I need to cancel my recent reservation due to demise of my grand father . I am Justin Lopez. Can you help me?

ASSISTANT: Sure, I can assist you with cancellation. Please wait.

USER: Sure.

ASSISTANT: unfortunately, no reservation is done earlier to cancel. Thanks for availing us.

USER: Thank you.