You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I assist you?

USER: I want to cancel my recent reservation.

ASSISTANT: OK, may I know your name for cancelling?

USER: Sure, my name is Ryan Thomas.

ASSISTANT: Sorry Thomas, unfortunately there is no reservation found under your name in our database.

USER: Thank you.

ASSISTANT: Thank you, have a good day.