You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve 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 with this?

ASSISTANT: Sure, we are here to help you. May I know your name please?

USER: Sure, I am Benjamin Anderson.

ASSISTANT: Please wait for a while.

USER: Sure, I will wait.

ASSISTANT: Sorry we couldn't find any reservation with your name in our database.

USER: Ok, Thank you.

ASSISTANT: Thank you for reaching us.