You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you at this moment?

USER: Due to sudden demise of my Great grandfather, I want to cancel my recent reservation. Can you please help me for cancellation?

ASSISTANT: Sure, I am here to help you with that. May I know your name?

USER: Sure, I am Michelle Harris.

ASSISTANT: Please wait for a minute. Sorry to say that, there is no reservation found on your name on our database.

USER: Ok, Thank you for your help.

ASSISTANT: Thank you for reaching us.